<article>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#article09_12_08_1956204</id>
	<title>Martian Methane May Be Created By Lifeforms</title>
	<author>kdawson</author>
	<datestamp>1260262140000</datestamp>
	<htmltext>Following our <a href="//science.slashdot.org/story/09/11/02/1435227/Bacteria-Could-Survive-In-Martian-Soil">recent</a> <a href="//science.slashdot.org/story/09/11/27/2057233/New-Evidence-For-Ancient-Life-On-Mars">discussions</a> about the growing evidence pointing to possible life on Mars, reader skywatcher2501 writes with news of a study that has <a href="http://spacefellowship.com/2009/12/08/life-on-mars-theory-boosted-by-new-methane-study/">ruled out one possible explanation for the levels of methane</a> seen on that planet &mdash; that it might be replenished by  disintegrating meteors entering the atmosphere. So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.</htmltext>
<tokenext>Following our recent discussions about the growing evidence pointing to possible life on Mars , reader skywatcher2501 writes with news of a study that has ruled out one possible explanation for the levels of methane seen on that planet    that it might be replenished by disintegrating meteors entering the atmosphere .
So two theories remain : either the gas is created as a by-product of reactions between volcanic rock and water , or it is a by-product of a lifeform 's metabolism .</tokentext>
<sentencetext>Following our recent discussions about the growing evidence pointing to possible life on Mars, reader skywatcher2501 writes with news of a study that has ruled out one possible explanation for the levels of methane seen on that planet — that it might be replenished by  disintegrating meteors entering the atmosphere.
So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.</sentencetext>
</article>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371136</id>
	<title>Re:don't really understand the point</title>
	<author>MightyMartian</author>
	<datestamp>1260270480000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I can imagine a situation analogous to deep sea vents, where you get "hot spots", or perhaps in the case of Mars, places where energy is plentiful enough to sustain ecosystems.  In either case, the further you get away from such areas of accessible energy and resources, life becomes more sparse.  It's also possible that Mars' harsher environment means organisms tend to metabolize much slower (we see this with organisms found deep below the surface).</p><p>It would be interesting, in the case of Earth, to figure out what percentages of methane are produced in what biozones.  That might give us some indication of what we should expect from an environment like Mars.</p><p>Still, serpentinization remains the more reasonable process considering the levels of methane and what we know of Martian chemistry.</p></htmltext>
<tokenext>I can imagine a situation analogous to deep sea vents , where you get " hot spots " , or perhaps in the case of Mars , places where energy is plentiful enough to sustain ecosystems .
In either case , the further you get away from such areas of accessible energy and resources , life becomes more sparse .
It 's also possible that Mars ' harsher environment means organisms tend to metabolize much slower ( we see this with organisms found deep below the surface ) .It would be interesting , in the case of Earth , to figure out what percentages of methane are produced in what biozones .
That might give us some indication of what we should expect from an environment like Mars.Still , serpentinization remains the more reasonable process considering the levels of methane and what we know of Martian chemistry .</tokentext>
<sentencetext>I can imagine a situation analogous to deep sea vents, where you get "hot spots", or perhaps in the case of Mars, places where energy is plentiful enough to sustain ecosystems.
In either case, the further you get away from such areas of accessible energy and resources, life becomes more sparse.
It's also possible that Mars' harsher environment means organisms tend to metabolize much slower (we see this with organisms found deep below the surface).It would be interesting, in the case of Earth, to figure out what percentages of methane are produced in what biozones.
That might give us some indication of what we should expect from an environment like Mars.Still, serpentinization remains the more reasonable process considering the levels of methane and what we know of Martian chemistry.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30421444</id>
	<title>Re:I do hope...</title>
	<author>Hurricane78</author>
	<datestamp>1260700740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Yeah, but Occam&rsquo;s razor slits their throats before they know it. ^^</p></htmltext>
<tokenext>Yeah , but Occam    s razor slits their throats before they know it .
^ ^</tokentext>
<sentencetext>Yeah, but Occam’s razor slits their throats before they know it.
^^</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370332</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370436</id>
	<title>Re:Is it possible?</title>
	<author>geckipede</author>
	<datestamp>1260267240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Life on Mars would have been at its prime billions of years ago. Whatever is left now would have to be either fossilised and completely inert, or still reproducing.</htmltext>
<tokenext>Life on Mars would have been at its prime billions of years ago .
Whatever is left now would have to be either fossilised and completely inert , or still reproducing .</tokentext>
<sentencetext>Life on Mars would have been at its prime billions of years ago.
Whatever is left now would have to be either fossilised and completely inert, or still reproducing.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371402</id>
	<title>Re:I do hope...</title>
	<author>youngone</author>
	<datestamp>1260271860000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>It might even mean that life is extemely common. If two planets in the same solar system can evole life seperately, then it would seem to be very common. If of course Mars life is a seperate evolution, and not panspermia.</htmltext>
<tokenext>It might even mean that life is extemely common .
If two planets in the same solar system can evole life seperately , then it would seem to be very common .
If of course Mars life is a seperate evolution , and not panspermia .</tokentext>
<sentencetext>It might even mean that life is extemely common.
If two planets in the same solar system can evole life seperately, then it would seem to be very common.
If of course Mars life is a seperate evolution, and not panspermia.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372684</id>
	<title>Re:This must mean...</title>
	<author>SkepticApe</author>
	<datestamp>1260279480000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Is it possible that there are underground frozen deposits of methane at the poles?</htmltext>
<tokenext>Is it possible that there are underground frozen deposits of methane at the poles ?</tokentext>
<sentencetext>Is it possible that there are underground frozen deposits of methane at the poles?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370112</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372928</id>
	<title>Methane Sink is also uncertain</title>
	<author>mbone</author>
	<datestamp>1260281400000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p>Neither the source nor the sink of Martian methane is understood, as was discussed by Lef&#232;vre &amp; Forget in <a href="http://www.nature.com/nature/journal/v460/n7256/full/nature08228.html" title="nature.com">Observed variations of methane on Mars unexplained by known atmospheric chemistry and physics</a> [nature.com] (Nature 460, 720-723 (6 August 2009)). Unlike the statement in the spacefellowship.com writeup, the observed methane plumes require a very quick absorption of methane on the surface, which means that the lifetime of methane in the atmosphere is not " a few hundred years" but months or less, maybe even hours or less. Since the shorter the lifetime, the larger the production required to match the observed plumes, we don't know the methane production on Mars to within even 3 orders of magnitude.</p><p>We don't know the source, we don't know the sink, and we don't know the production rate, so I personally don't see how biology can be ruled out, despite the editorializing in Lef&#232;vre &amp; Forget.</p></htmltext>
<tokenext>Neither the source nor the sink of Martian methane is understood , as was discussed by Lef   vre &amp; Forget in Observed variations of methane on Mars unexplained by known atmospheric chemistry and physics [ nature.com ] ( Nature 460 , 720-723 ( 6 August 2009 ) ) .
Unlike the statement in the spacefellowship.com writeup , the observed methane plumes require a very quick absorption of methane on the surface , which means that the lifetime of methane in the atmosphere is not " a few hundred years " but months or less , maybe even hours or less .
Since the shorter the lifetime , the larger the production required to match the observed plumes , we do n't know the methane production on Mars to within even 3 orders of magnitude.We do n't know the source , we do n't know the sink , and we do n't know the production rate , so I personally do n't see how biology can be ruled out , despite the editorializing in Lef   vre &amp; Forget .</tokentext>
<sentencetext>Neither the source nor the sink of Martian methane is understood, as was discussed by Lefèvre &amp; Forget in Observed variations of methane on Mars unexplained by known atmospheric chemistry and physics [nature.com] (Nature 460, 720-723 (6 August 2009)).
Unlike the statement in the spacefellowship.com writeup, the observed methane plumes require a very quick absorption of methane on the surface, which means that the lifetime of methane in the atmosphere is not " a few hundred years" but months or less, maybe even hours or less.
Since the shorter the lifetime, the larger the production required to match the observed plumes, we don't know the methane production on Mars to within even 3 orders of magnitude.We don't know the source, we don't know the sink, and we don't know the production rate, so I personally don't see how biology can be ruled out, despite the editorializing in Lefèvre &amp; Forget.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370440</id>
	<title>Or it could be</title>
	<author>Anonymous</author>
	<datestamp>1260267300000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>the byproduct of an invasion force from Alpha Centauri building up under the Martian landscape. They'll land on earth and take our women for sure. Then we'll be doomed. Who wants to look at the hairy guys?</p></htmltext>
<tokenext>the byproduct of an invasion force from Alpha Centauri building up under the Martian landscape .
They 'll land on earth and take our women for sure .
Then we 'll be doomed .
Who wants to look at the hairy guys ?</tokentext>
<sentencetext>the byproduct of an invasion force from Alpha Centauri building up under the Martian landscape.
They'll land on earth and take our women for sure.
Then we'll be doomed.
Who wants to look at the hairy guys?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372746</id>
	<title>Yeah, and...</title>
	<author>Anonymous</author>
	<datestamp>1260279960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Monkeys might fly out of Uranus.</p></htmltext>
<tokenext>Monkeys might fly out of Uranus .</tokentext>
<sentencetext>Monkeys might fly out of Uranus.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371060</id>
	<title>Re:Underground methane leaking?</title>
	<author>samkass</author>
	<datestamp>1260270180000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Can't methane be Carbon-dated like any other metabolic by-product?</p></htmltext>
<tokenext>Ca n't methane be Carbon-dated like any other metabolic by-product ?</tokentext>
<sentencetext>Can't methane be Carbon-dated like any other metabolic by-product?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370178</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371984</id>
	<title>Re:Just ask the USS Reliant to stop by</title>
	<author>jfengel</author>
	<datestamp>1260275160000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Since I don't have any mod points, let me just say that that is the nerdiest thing I've read all day.  Thank you.</p></htmltext>
<tokenext>Since I do n't have any mod points , let me just say that that is the nerdiest thing I 've read all day .
Thank you .</tokentext>
<sentencetext>Since I don't have any mod points, let me just say that that is the nerdiest thing I've read all day.
Thank you.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370546</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370752</id>
	<title>Re:Underground methane leaking?</title>
	<author>Cyberax</author>
	<datestamp>1260268920000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>3</modscore>
	<htmltext><p>Possible, but unlikely. Mars tectonics had stopped a loooong time ago.</p><p>And without plate tectonics it's pretty hard to imagine how geologic traps for organic material could have formed.</p></htmltext>
<tokenext>Possible , but unlikely .
Mars tectonics had stopped a loooong time ago.And without plate tectonics it 's pretty hard to imagine how geologic traps for organic material could have formed .</tokentext>
<sentencetext>Possible, but unlikely.
Mars tectonics had stopped a loooong time ago.And without plate tectonics it's pretty hard to imagine how geologic traps for organic material could have formed.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370178</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371332</id>
	<title>aliens arrived</title>
	<author>CHRONOSS2008</author>
	<datestamp>1260271500000</datestamp>
	<modclass>None</modclass>
	<modscore>-1</modscore>
	<htmltext><p>and there gas is being detected</p><p>yea its farfetched but they could be , us , or the real aliens<br>maybe the roswell types are making a base to get even for 1947</p></htmltext>
<tokenext>and there gas is being detectedyea its farfetched but they could be , us , or the real aliensmaybe the roswell types are making a base to get even for 1947</tokentext>
<sentencetext>and there gas is being detectedyea its farfetched but they could be , us , or the real aliensmaybe the roswell types are making a base to get even for 1947</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370182</id>
	<title>And  the cow goes</title>
	<author>Anonymous</author>
	<datestamp>1260266280000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>-1</modscore>
	<htmltext><p>Pffffllltttt!!</p></htmltext>
<tokenext>Pffffllltttt !
!</tokentext>
<sentencetext>Pffffllltttt!
!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373112</id>
	<title>Re:don't really understand the point</title>
	<author>mbone</author>
	<datestamp>1260283080000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p>Several troubles with that idea. First, note that the Methane production rates quoted in the original article are much too small based on the observed Martian Methane plumes and their implications.  Given that</p><p>- it's hard to see how serpentinization explains the observed intermittent methane plumes</p><p>- it doesn't explain  at all the sink of the methane, which has to be very powerful (to explain the observed plumes)</p><p>- the production estimates by <a href="http://www.nature.com/nature/journal/v460/n7256/full/nature08228.html" title="nature.com">Lef&#232;vre &amp; Forget</a> [nature.com] (Nature 460, 720-723 (6 August 2009)) are large for this explanation :</p><p><i>This optimum quantitative agreement with the methane observations is obtained with 150,000 t of methane emitted by the sporadic source. This amount is comparable to the yearly geochemical production of methane by serpentinization (50,000&ndash;130,000 t yr-1) along the entire Mid-Atlantic Ridge on Earth.</i></p><p>Of course, there is lots of water along the Mid-Atlantic Ridge. Where is there a comparable amount of liquid water on Mars coming in contact with new olivine ? To me, this seems like a stretch.</p><p>By the way, 150,000 tonnes per year (as a rough guess of Martian production) is about 0.1\% of terrestrial biological production, which does not seem outlandishly large or small for a hypothetical Martian biosphere.</p></htmltext>
<tokenext>Several troubles with that idea .
First , note that the Methane production rates quoted in the original article are much too small based on the observed Martian Methane plumes and their implications .
Given that- it 's hard to see how serpentinization explains the observed intermittent methane plumes- it does n't explain at all the sink of the methane , which has to be very powerful ( to explain the observed plumes ) - the production estimates by Lef   vre &amp; Forget [ nature.com ] ( Nature 460 , 720-723 ( 6 August 2009 ) ) are large for this explanation : This optimum quantitative agreement with the methane observations is obtained with 150,000 t of methane emitted by the sporadic source .
This amount is comparable to the yearly geochemical production of methane by serpentinization ( 50,000    130,000 t yr-1 ) along the entire Mid-Atlantic Ridge on Earth.Of course , there is lots of water along the Mid-Atlantic Ridge .
Where is there a comparable amount of liquid water on Mars coming in contact with new olivine ?
To me , this seems like a stretch.By the way , 150,000 tonnes per year ( as a rough guess of Martian production ) is about 0.1 \ % of terrestrial biological production , which does not seem outlandishly large or small for a hypothetical Martian biosphere .</tokentext>
<sentencetext>Several troubles with that idea.
First, note that the Methane production rates quoted in the original article are much too small based on the observed Martian Methane plumes and their implications.
Given that- it's hard to see how serpentinization explains the observed intermittent methane plumes- it doesn't explain  at all the sink of the methane, which has to be very powerful (to explain the observed plumes)- the production estimates by Lefèvre &amp; Forget [nature.com] (Nature 460, 720-723 (6 August 2009)) are large for this explanation :This optimum quantitative agreement with the methane observations is obtained with 150,000 t of methane emitted by the sporadic source.
This amount is comparable to the yearly geochemical production of methane by serpentinization (50,000–130,000 t yr-1) along the entire Mid-Atlantic Ridge on Earth.Of course, there is lots of water along the Mid-Atlantic Ridge.
Where is there a comparable amount of liquid water on Mars coming in contact with new olivine ?
To me, this seems like a stretch.By the way, 150,000 tonnes per year (as a rough guess of Martian production) is about 0.1\% of terrestrial biological production, which does not seem outlandishly large or small for a hypothetical Martian biosphere.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370542</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260267900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><blockquote><div><p>Unless it's human-level intelligent life, religious people will rationalize it: "Well only \_Earth\_ has \_intelligent\_ life in the Universe!"</p></div></blockquote><p>In such a case I would deny the latter claim<nobr> <wbr></nobr>...</p></div>
	</htmltext>
<tokenext>Unless it 's human-level intelligent life , religious people will rationalize it : " Well only \ _Earth \ _ has \ _intelligent \ _ life in the Universe !
" In such a case I would deny the latter claim .. .</tokentext>
<sentencetext>Unless it's human-level intelligent life, religious people will rationalize it: "Well only \_Earth\_ has \_intelligent\_ life in the Universe!
"In such a case I would deny the latter claim ...
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370248</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372052</id>
	<title>Re:don't really understand the point</title>
	<author>Thing 1</author>
	<datestamp>1260275580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><blockquote><div><p>I don't see life on Mars staying in one place over millions much less hundreds of millions of years.</p></div>
</blockquote><p>Hmm.  I just started watching Life on Mars, in fact, and I can fairly accurately predict that it won't stay in one place over millions, let alone hundreds of years.  I mean, there was only so much good music created in the early 70s, after all...  (The free love aspect, though, that should get at least a couple seasons...)</p></div>
	</htmltext>
<tokenext>I do n't see life on Mars staying in one place over millions much less hundreds of millions of years .
Hmm. I just started watching Life on Mars , in fact , and I can fairly accurately predict that it wo n't stay in one place over millions , let alone hundreds of years .
I mean , there was only so much good music created in the early 70s , after all... ( The free love aspect , though , that should get at least a couple seasons... )</tokentext>
<sentencetext>I don't see life on Mars staying in one place over millions much less hundreds of millions of years.
Hmm.  I just started watching Life on Mars, in fact, and I can fairly accurately predict that it won't stay in one place over millions, let alone hundreds of years.
I mean, there was only so much good music created in the early 70s, after all...  (The free love aspect, though, that should get at least a couple seasons...)
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370482</id>
	<title>Re:Once again ...</title>
	<author>Geoffrey.landis</author>
	<datestamp>1260267600000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>... we're missing critical information in the report. The keep mentioning "levels of methane" but they don't tell us what these levels are </p></div><p>The <a href="http://en.wikipedia.org/wiki/Atmosphere\_of\_Mars" title="wikipedia.org">usual</a> [wikipedia.org] sources quote about 10 parts per billion of Methane in the atmosphere.  Michael Mumma of Goddard Space Flight Center, with earthbound telescopes, says <a href="http://www.spacedaily.com/news/mars-life-05r.html" title="spacedaily.com">he's detected</a> [spacedaily.com] up to 200 parts per billion near the equator.  Recent observations suggest that the methane is released in plumes, one of which released about <a href="http://www.nasa.gov/mission\_pages/mars/news/marsmethane.html" title="nasa.gov">19,000 metric tons</a> [nasa.gov] of methane [<a href="http://www.space.com/scienceastronomy/090115-mars-methane-news.html" title="space.com">space.com</a> [space.com]].</p></div>
	</htmltext>
<tokenext>... we 're missing critical information in the report .
The keep mentioning " levels of methane " but they do n't tell us what these levels are The usual [ wikipedia.org ] sources quote about 10 parts per billion of Methane in the atmosphere .
Michael Mumma of Goddard Space Flight Center , with earthbound telescopes , says he 's detected [ spacedaily.com ] up to 200 parts per billion near the equator .
Recent observations suggest that the methane is released in plumes , one of which released about 19,000 metric tons [ nasa.gov ] of methane [ space.com [ space.com ] ] .</tokentext>
<sentencetext>... we're missing critical information in the report.
The keep mentioning "levels of methane" but they don't tell us what these levels are The usual [wikipedia.org] sources quote about 10 parts per billion of Methane in the atmosphere.
Michael Mumma of Goddard Space Flight Center, with earthbound telescopes, says he's detected [spacedaily.com] up to 200 parts per billion near the equator.
Recent observations suggest that the methane is released in plumes, one of which released about 19,000 metric tons [nasa.gov] of methane [space.com [space.com]].
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370206</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371658</id>
	<title>I am a Martian planning an invasion here in earth</title>
	<author>fregare</author>
	<datestamp>1260273300000</datestamp>
	<modclass>None</modclass>
	<modscore>-1</modscore>
	<htmltext>I am sick of you "people" polluting the Martian landscape with your doom buggies.  All you people do is pollute the environment, start wars, and screw the oppressed.  BARBARIANS !!!

We will invade soon and your doom will be assured.</htmltext>
<tokenext>I am sick of you " people " polluting the Martian landscape with your doom buggies .
All you people do is pollute the environment , start wars , and screw the oppressed .
BARBARIANS ! ! !
We will invade soon and your doom will be assured .</tokentext>
<sentencetext>I am sick of you "people" polluting the Martian landscape with your doom buggies.
All you people do is pollute the environment, start wars, and screw the oppressed.
BARBARIANS !!!
We will invade soon and your doom will be assured.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30377140</id>
	<title>Re:Go ahead</title>
	<author>Luyseyal</author>
	<datestamp>1259597640000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I read that in Zoidberg's voice. Hilarious.</p><p>-l</p></htmltext>
<tokenext>I read that in Zoidberg 's voice .
Hilarious.-l</tokentext>
<sentencetext>I read that in Zoidberg's voice.
Hilarious.-l</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371380</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372832</id>
	<title>Re:Even more compelling</title>
	<author>kurt555gs</author>
	<datestamp>1260280680000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>What are "they" supposed to say" We picked up the alien bodies at Roswell and shipped em off to Area 51, where we have managed to keep one alive on a methane respirator?</p><p>Naaaa, who would believe that? Well, Besides Art Bell.</p></htmltext>
<tokenext>What are " they " supposed to say " We picked up the alien bodies at Roswell and shipped em off to Area 51 , where we have managed to keep one alive on a methane respirator ? Naaaa , who would believe that ?
Well , Besides Art Bell .</tokentext>
<sentencetext>What are "they" supposed to say" We picked up the alien bodies at Roswell and shipped em off to Area 51, where we have managed to keep one alive on a methane respirator?Naaaa, who would believe that?
Well, Besides Art Bell.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370562</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372182</id>
	<title>Carbon-14 measurement?</title>
	<author>TheSync</author>
	<datestamp>1260276420000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>1</modscore>
	<htmltext><p>Wouldn't carbon-14 measurement of the methane tell us whether there is live involved or not?</p></htmltext>
<tokenext>Would n't carbon-14 measurement of the methane tell us whether there is live involved or not ?</tokentext>
<sentencetext>Wouldn't carbon-14 measurement of the methane tell us whether there is live involved or not?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370284</id>
	<title>Really?</title>
	<author>Drasham</author>
	<datestamp>1260266760000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>From the article:<p><div class="quote"><p>Either there are microorganisms living in the Martian soil that are producing methane gas as a by-product of their metabolic processes, or methane is being produced as a by-product of reactions between volcanic rock and water.</p></div><p>
I think that it would be really exciting to find the first possibility true, and there's ample precedent for it here on earth.</p></div>
	</htmltext>
<tokenext>From the article : Either there are microorganisms living in the Martian soil that are producing methane gas as a by-product of their metabolic processes , or methane is being produced as a by-product of reactions between volcanic rock and water .
I think that it would be really exciting to find the first possibility true , and there 's ample precedent for it here on earth .</tokentext>
<sentencetext>From the article:Either there are microorganisms living in the Martian soil that are producing methane gas as a by-product of their metabolic processes, or methane is being produced as a by-product of reactions between volcanic rock and water.
I think that it would be really exciting to find the first possibility true, and there's ample precedent for it here on earth.
	</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371380</id>
	<title>Go ahead</title>
	<author>PPH</author>
	<datestamp>1260271740000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext><p>Pull my tentacle.</p></htmltext>
<tokenext>Pull my tentacle .</tokentext>
<sentencetext>Pull my tentacle.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370462</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260267360000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>0</modscore>
	<htmltext>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment. Does anyone else think that's odd?</htmltext>
<tokenext>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment .
Does anyone else think that 's odd ?</tokentext>
<sentencetext>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment.
Does anyone else think that's odd?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371550</id>
	<title>Re:Even more compelling</title>
	<author>GNUALMAFUERTE</author>
	<datestamp>1260272700000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>Yes, I am not in the USA either.</p></htmltext>
<tokenext>Yes , I am not in the USA either .</tokentext>
<sentencetext>Yes, I am not in the USA either.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370962</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370206</id>
	<title>Once again ...</title>
	<author>abbynormal brain</author>
	<datestamp>1260266400000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>... we're missing critical information in the report. The keep mentioning "levels of methane" but they don't tell us what these levels are - and more importantly, how much bio mass would be required to create those levels. They also don't mention if it's saturated in certain areas (like around live volcanoes).</p></htmltext>
<tokenext>... we 're missing critical information in the report .
The keep mentioning " levels of methane " but they do n't tell us what these levels are - and more importantly , how much bio mass would be required to create those levels .
They also do n't mention if it 's saturated in certain areas ( like around live volcanoes ) .</tokentext>
<sentencetext>... we're missing critical information in the report.
The keep mentioning "levels of methane" but they don't tell us what these levels are - and more importantly, how much bio mass would be required to create those levels.
They also don't mention if it's saturated in certain areas (like around live volcanoes).</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30374216</id>
	<title>Re:crap</title>
	<author>Anonymous</author>
	<datestamp>1260295080000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Yeah those ecozelots really get my goat, along with fagatarians, east coast elitists, islamofascists, femanazies, limousine liberals,  pacific northwest treehuggers, Hollywood, and people who drink lattes.</p></htmltext>
<tokenext>Yeah those ecozelots really get my goat , along with fagatarians , east coast elitists , islamofascists , femanazies , limousine liberals , pacific northwest treehuggers , Hollywood , and people who drink lattes .</tokentext>
<sentencetext>Yeah those ecozelots really get my goat, along with fagatarians, east coast elitists, islamofascists, femanazies, limousine liberals,  pacific northwest treehuggers, Hollywood, and people who drink lattes.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370410</id>
	<title>Overlords</title>
	<author>Anonymous</author>
	<datestamp>1260267180000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>I, for one, welcome our new flatulent Martian overlords.</p></htmltext>
<tokenext>I , for one , welcome our new flatulent Martian overlords .</tokentext>
<sentencetext>I, for one, welcome our new flatulent Martian overlords.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371046</id>
	<title>Life on Mars</title>
	<author>mollog</author>
	<datestamp>1260270120000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I thought I had heard that Mars' atmosphere is weak because the plant's core is not molten like the core of Earth. Is this still the theory?<br> <br>

For those who aren't familiar with the idea, Earth's molten core creates a magnetic field that blocks the solar wind from the Sun. The solar wind would blow away Earth's atmosphere if it weren't there.<br> <br>

So, if Mars somehow got a molten core, by adding mass, or simply spontaneously, air would remain, then seas could form, etc.<br> <br>

The presence of methane from biological processes holds hope for a Green Mars someday.</htmltext>
<tokenext>I thought I had heard that Mars ' atmosphere is weak because the plant 's core is not molten like the core of Earth .
Is this still the theory ?
For those who are n't familiar with the idea , Earth 's molten core creates a magnetic field that blocks the solar wind from the Sun .
The solar wind would blow away Earth 's atmosphere if it were n't there .
So , if Mars somehow got a molten core , by adding mass , or simply spontaneously , air would remain , then seas could form , etc .
The presence of methane from biological processes holds hope for a Green Mars someday .</tokentext>
<sentencetext>I thought I had heard that Mars' atmosphere is weak because the plant's core is not molten like the core of Earth.
Is this still the theory?
For those who aren't familiar with the idea, Earth's molten core creates a magnetic field that blocks the solar wind from the Sun.
The solar wind would blow away Earth's atmosphere if it weren't there.
So, if Mars somehow got a molten core, by adding mass, or simply spontaneously, air would remain, then seas could form, etc.
The presence of methane from biological processes holds hope for a Green Mars someday.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370112</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30375802</id>
	<title>Re:Is it possible?</title>
	<author>vegiVamp</author>
	<datestamp>1259584740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>"Still reproducing" also entails that some of them die off on a regular basis.</htmltext>
<tokenext>" Still reproducing " also entails that some of them die off on a regular basis .</tokentext>
<sentencetext>"Still reproducing" also entails that some of them die off on a regular basis.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370436</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373574</id>
	<title>Dr. Neil deGrasse Tyson</title>
	<author>negatonium</author>
	<datestamp>1260287160000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Here's an interview with Dr. Neil deGrasse Tyson, director of the Hayden Planetarium, where he concludes that Life is the most likely and simplest explanation for all the methane on Mars. Surprising to hear a very mainstream scientist say so and so openly.

<a href="http://jonja.net/forums/viewtopic.php?f=29&amp;t=8193" title="jonja.net" rel="nofollow">http://jonja.net/forums/viewtopic.php?f=29&amp;t=8193</a> [jonja.net]</htmltext>
<tokenext>Here 's an interview with Dr. Neil deGrasse Tyson , director of the Hayden Planetarium , where he concludes that Life is the most likely and simplest explanation for all the methane on Mars .
Surprising to hear a very mainstream scientist say so and so openly .
http : //jonja.net/forums/viewtopic.php ? f = 29&amp;t = 8193 [ jonja.net ]</tokentext>
<sentencetext>Here's an interview with Dr. Neil deGrasse Tyson, director of the Hayden Planetarium, where he concludes that Life is the most likely and simplest explanation for all the methane on Mars.
Surprising to hear a very mainstream scientist say so and so openly.
http://jonja.net/forums/viewtopic.php?f=29&amp;t=8193 [jonja.net]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371900</id>
	<title>Inevitable Meme</title>
	<author>Anonymous</author>
	<datestamp>1260274680000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I, for one, welcome our new flatulent microscopic Martian overlords.</p></htmltext>
<tokenext>I , for one , welcome our new flatulent microscopic Martian overlords .</tokentext>
<sentencetext>I, for one, welcome our new flatulent microscopic Martian overlords.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370774</id>
	<title>Re:Underground methane leaking?</title>
	<author>Anonymous</author>
	<datestamp>1260269040000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>First off, to have appreciable quantities of methane left, there must have been marshes or rainforests or similar concentrations of biomatter all being subsumed at once. Such concentrations would have left other hints, and would likely mean that extremophile bacteria still exist. Secondly, past life on mars (of sufficient quantity to study) would be just as meaningful as present life on mars.</htmltext>
<tokenext>First off , to have appreciable quantities of methane left , there must have been marshes or rainforests or similar concentrations of biomatter all being subsumed at once .
Such concentrations would have left other hints , and would likely mean that extremophile bacteria still exist .
Secondly , past life on mars ( of sufficient quantity to study ) would be just as meaningful as present life on mars .</tokentext>
<sentencetext>First off, to have appreciable quantities of methane left, there must have been marshes or rainforests or similar concentrations of biomatter all being subsumed at once.
Such concentrations would have left other hints, and would likely mean that extremophile bacteria still exist.
Secondly, past life on mars (of sufficient quantity to study) would be just as meaningful as present life on mars.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370178</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370144</id>
	<title>As a Mr. Skywalker once said:</title>
	<author>fuzzyfuzzyfungus</author>
	<datestamp>1260266040000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>"There's something alive in here!"</htmltext>
<tokenext>" There 's something alive in here !
"</tokentext>
<sentencetext>"There's something alive in here!
"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370490</id>
	<title>Re:I do hope...</title>
	<author>blincoln</author>
	<datestamp>1260267600000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p><i>Almost as good as the BBC TV series...</i></p><p>A little off on a tangent, but I was just watching another BBC series (<i>Planet Earth</i> - I know, I'm a little late to that party), and there are numerous extremophiles covered in it. I knew about some of them already, but I was particularly surprised at the bacteria and animals that live in naturally-occurring sulfuric acid.<br>I'd been doing a little reading about bacteria that live off of the sulfur cycle (as opposed to the carbon cycle) already because <a href="http://www.beneaththewaves.net/Photography/Yellowstone\_National\_Park.html" title="beneaththewaves.net">my multispectral photos of the hotsprings at Yellowstone</a> [beneaththewaves.net] reminded me of NASA's imagery of Io and I wanted to see if it were even possible that there was more than a superficial similarity at work, but I had no idea there were larger life forms (e.g. fish) that make that sort of environment their home.<br>Life seems to have found a way to thrive in every possible bizarre environment here on Earth. I suspect that except for planets and moons that are incredibly isolated in some way, we'll find at least microorganisms on many of them. Of course, actually confirming that would be mind-bogglingly-important news, but I wouldn't be <i>surprised</i>.</p></htmltext>
<tokenext>Almost as good as the BBC TV series...A little off on a tangent , but I was just watching another BBC series ( Planet Earth - I know , I 'm a little late to that party ) , and there are numerous extremophiles covered in it .
I knew about some of them already , but I was particularly surprised at the bacteria and animals that live in naturally-occurring sulfuric acid.I 'd been doing a little reading about bacteria that live off of the sulfur cycle ( as opposed to the carbon cycle ) already because my multispectral photos of the hotsprings at Yellowstone [ beneaththewaves.net ] reminded me of NASA 's imagery of Io and I wanted to see if it were even possible that there was more than a superficial similarity at work , but I had no idea there were larger life forms ( e.g .
fish ) that make that sort of environment their home.Life seems to have found a way to thrive in every possible bizarre environment here on Earth .
I suspect that except for planets and moons that are incredibly isolated in some way , we 'll find at least microorganisms on many of them .
Of course , actually confirming that would be mind-bogglingly-important news , but I would n't be surprised .</tokentext>
<sentencetext>Almost as good as the BBC TV series...A little off on a tangent, but I was just watching another BBC series (Planet Earth - I know, I'm a little late to that party), and there are numerous extremophiles covered in it.
I knew about some of them already, but I was particularly surprised at the bacteria and animals that live in naturally-occurring sulfuric acid.I'd been doing a little reading about bacteria that live off of the sulfur cycle (as opposed to the carbon cycle) already because my multispectral photos of the hotsprings at Yellowstone [beneaththewaves.net] reminded me of NASA's imagery of Io and I wanted to see if it were even possible that there was more than a superficial similarity at work, but I had no idea there were larger life forms (e.g.
fish) that make that sort of environment their home.Life seems to have found a way to thrive in every possible bizarre environment here on Earth.
I suspect that except for planets and moons that are incredibly isolated in some way, we'll find at least microorganisms on many of them.
Of course, actually confirming that would be mind-bogglingly-important news, but I wouldn't be surprised.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371072</id>
	<title>Only one lifeform?</title>
	<author>Mmm\_pickles</author>
	<datestamp>1260270240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>That must be some lifeform.</p></htmltext>
<tokenext>That must be some lifeform .</tokentext>
<sentencetext>That must be some lifeform.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370312</id>
	<title>Re:I do hope...</title>
	<author>lattyware</author>
	<datestamp>1260266820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I loved that series.

Then I watched the American version, the ending to that was truly, truly horrible.</htmltext>
<tokenext>I loved that series .
Then I watched the American version , the ending to that was truly , truly horrible .</tokentext>
<sentencetext>I loved that series.
Then I watched the American version, the ending to that was truly, truly horrible.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370676</id>
	<title>Re:Is it possible?</title>
	<author>Orleron</author>
	<datestamp>1260268560000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>5</modscore>
	<htmltext>"Decay" implies the breakdown of biological tissue by... you guessed it, micro-organisms.  In places where there is not much bacteria, like the antarctic, things that die do not decay noticeably over hundreds of years or more.
<br>
So, I doubt decay from dead things is producing the methane.</htmltext>
<tokenext>" Decay " implies the breakdown of biological tissue by... you guessed it , micro-organisms .
In places where there is not much bacteria , like the antarctic , things that die do not decay noticeably over hundreds of years or more .
So , I doubt decay from dead things is producing the methane .</tokentext>
<sentencetext>"Decay" implies the breakdown of biological tissue by... you guessed it, micro-organisms.
In places where there is not much bacteria, like the antarctic, things that die do not decay noticeably over hundreds of years or more.
So, I doubt decay from dead things is producing the methane.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371352</id>
	<title>Re:I do hope...</title>
	<author>Suicyco</author>
	<datestamp>1260271560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Not if the life on Mars is of earth origin (or earth life is or mars origin). That could still mean earth is the only place life has developed. It needs to be its own independent evolution for it to mean that life could be everywhere. Otherwise it still doesn't answer the question of how common life evolves in the universe.</p></htmltext>
<tokenext>Not if the life on Mars is of earth origin ( or earth life is or mars origin ) .
That could still mean earth is the only place life has developed .
It needs to be its own independent evolution for it to mean that life could be everywhere .
Otherwise it still does n't answer the question of how common life evolves in the universe .</tokentext>
<sentencetext>Not if the life on Mars is of earth origin (or earth life is or mars origin).
That could still mean earth is the only place life has developed.
It needs to be its own independent evolution for it to mean that life could be everywhere.
Otherwise it still doesn't answer the question of how common life evolves in the universe.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</id>
	<title>I do hope...</title>
	<author>Dartz-IRL</author>
	<datestamp>1260266100000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>4</modscore>
	<htmltext><p>That it is life. I've said it before so I won't reiterate with a long post, but if there's life on Mars, that proves life isn't just unique to Earth. This planet isn't a fluke. If there's life on Mars, then it can be *anywhere*</p><p>What an amazing thing that would be.</p><p>Almost as good as the BBC TV series...</p></htmltext>
<tokenext>That it is life .
I 've said it before so I wo n't reiterate with a long post , but if there 's life on Mars , that proves life is n't just unique to Earth .
This planet is n't a fluke .
If there 's life on Mars , then it can be * anywhere * What an amazing thing that would be.Almost as good as the BBC TV series.. .</tokentext>
<sentencetext>That it is life.
I've said it before so I won't reiterate with a long post, but if there's life on Mars, that proves life isn't just unique to Earth.
This planet isn't a fluke.
If there's life on Mars, then it can be *anywhere*What an amazing thing that would be.Almost as good as the BBC TV series...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371816</id>
	<title>Re:I do hope...</title>
	<author>blair1q</author>
	<datestamp>1260274200000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Life needed something of a special environment to get from the random atoms and small molecules to the organized large-chain molecules with cyclical behaviors stage.  An environment of fluidity and high energy input, but bounded stressors.  A place that was wet and warm without being too hot.  And one that had a high concentration of the right sorts of atoms in the right proportions, at least in the wet and warm places.</p><p>It's ridiculous to think the Earth is unique, but it's pointless to hope that any other planet in this Solar System has ever had the right combination of stuff to make it happen in a quantity we can detect.</p><p>Serendipitously, the greatest* advancements in life were made to occur because the first forms of life on Earth (stromatolites) transformed the entire atmosphere into one rich in oxygen, and the seas as well, causing the high concentrations of dissolved iron to precipitate.</p><p>* - at least as far as we animals are concerned, or as far as the weak anthropic principle will allow</p></htmltext>
<tokenext>Life needed something of a special environment to get from the random atoms and small molecules to the organized large-chain molecules with cyclical behaviors stage .
An environment of fluidity and high energy input , but bounded stressors .
A place that was wet and warm without being too hot .
And one that had a high concentration of the right sorts of atoms in the right proportions , at least in the wet and warm places.It 's ridiculous to think the Earth is unique , but it 's pointless to hope that any other planet in this Solar System has ever had the right combination of stuff to make it happen in a quantity we can detect.Serendipitously , the greatest * advancements in life were made to occur because the first forms of life on Earth ( stromatolites ) transformed the entire atmosphere into one rich in oxygen , and the seas as well , causing the high concentrations of dissolved iron to precipitate .
* - at least as far as we animals are concerned , or as far as the weak anthropic principle will allow</tokentext>
<sentencetext>Life needed something of a special environment to get from the random atoms and small molecules to the organized large-chain molecules with cyclical behaviors stage.
An environment of fluidity and high energy input, but bounded stressors.
A place that was wet and warm without being too hot.
And one that had a high concentration of the right sorts of atoms in the right proportions, at least in the wet and warm places.It's ridiculous to think the Earth is unique, but it's pointless to hope that any other planet in this Solar System has ever had the right combination of stuff to make it happen in a quantity we can detect.Serendipitously, the greatest* advancements in life were made to occur because the first forms of life on Earth (stromatolites) transformed the entire atmosphere into one rich in oxygen, and the seas as well, causing the high concentrations of dissolved iron to precipitate.
* - at least as far as we animals are concerned, or as far as the weak anthropic principle will allow</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370530</id>
	<title>Re:option C</title>
	<author>Spatial</author>
	<datestamp>1260267840000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Undefined methods aren't "theories" you smartass.</htmltext>
<tokenext>Undefined methods are n't " theories " you smartass .</tokentext>
<sentencetext>Undefined methods aren't "theories" you smartass.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373330</id>
	<title>Re:Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1260284700000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Even more compelling - methane concentration ejected from Uranus.</p></htmltext>
<tokenext>Even more compelling - methane concentration ejected from Uranus .</tokentext>
<sentencetext>Even more compelling - methane concentration ejected from Uranus.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</id>
	<title>Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1260265860000</datestamp>
	<modclass>Funny</modclass>
	<modscore>5</modscore>
	<htmltext><p>Methane concentrations peak in an area on the planet opposite the famous face on mars.</p></htmltext>
<tokenext>Methane concentrations peak in an area on the planet opposite the famous face on mars .</tokentext>
<sentencetext>Methane concentrations peak in an area on the planet opposite the famous face on mars.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30376038</id>
	<title>Re:This must mean...</title>
	<author>dpastern</author>
	<datestamp>1259588460000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Let's just face it:</p><p>martians love farting</p><p>Dave</p></htmltext>
<tokenext>Let 's just face it : martians love fartingDave</tokentext>
<sentencetext>Let's just face it:martians love fartingDave</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370112</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370666</id>
	<title>Re:option C</title>
	<author>Anonymous</author>
	<datestamp>1260268500000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism."</p><p>Or C: There is some, as of yet, unidentified method of methane production.</p></div><p>That's not a theory, it's a catch all.</p></div>
	</htmltext>
<tokenext>" So two theories remain : either the gas is created as a by-product of reactions between volcanic rock and water , or it is a by-product of a lifeform 's metabolism .
" Or C : There is some , as of yet , unidentified method of methane production.That 's not a theory , it 's a catch all .</tokentext>
<sentencetext>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.
"Or C: There is some, as of yet, unidentified method of methane production.That's not a theory, it's a catch all.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372336</id>
	<title>Re:Life on Mars</title>
	<author>w0mprat</author>
	<datestamp>1260277440000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>That is the theory in a nutshell. Indeed Mars has more than enough gravity to hold an atmosphere, solar wind has eroded it.
<br> <br>
(I do believe though that temperature plays helpful a role in titans thick atmosphere, despite half the surface gravity of mars)</htmltext>
<tokenext>That is the theory in a nutshell .
Indeed Mars has more than enough gravity to hold an atmosphere , solar wind has eroded it .
( I do believe though that temperature plays helpful a role in titans thick atmosphere , despite half the surface gravity of mars )</tokentext>
<sentencetext>That is the theory in a nutshell.
Indeed Mars has more than enough gravity to hold an atmosphere, solar wind has eroded it.
(I do believe though that temperature plays helpful a role in titans thick atmosphere, despite half the surface gravity of mars)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371046</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</id>
	<title>Is it possible?</title>
	<author>tibman</author>
	<datestamp>1260266400000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Could it be possible that there <b>was</b> life on mars... and not any more?  Those long dead critters are continuing to decay and release the gas.</p></htmltext>
<tokenext>Could it be possible that there was life on mars... and not any more ?
Those long dead critters are continuing to decay and release the gas .</tokentext>
<sentencetext>Could it be possible that there was life on mars... and not any more?
Those long dead critters are continuing to decay and release the gas.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370448</id>
	<title>Simple explanation.</title>
	<author>Kenja</author>
	<datestamp>1260267300000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>There's a small worm hole from the local Taco Bell leading to Mars.</htmltext>
<tokenext>There 's a small worm hole from the local Taco Bell leading to Mars .</tokentext>
<sentencetext>There's a small worm hole from the local Taco Bell leading to Mars.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370724</id>
	<title>Cows</title>
	<author>JustNiz</author>
	<datestamp>1260268740000</datestamp>
	<modclass>Funny</modclass>
	<modscore>4</modscore>
	<htmltext><p>Cows ruined their own planet before they came to earth millenia ago.<br>Its this migration that the child's nursery rhyme is referencing in the line "the cow jumped over the moon".<br>They're now doing the same to the earth.</p></htmltext>
<tokenext>Cows ruined their own planet before they came to earth millenia ago.Its this migration that the child 's nursery rhyme is referencing in the line " the cow jumped over the moon " .They 're now doing the same to the earth .</tokentext>
<sentencetext>Cows ruined their own planet before they came to earth millenia ago.Its this migration that the child's nursery rhyme is referencing in the line "the cow jumped over the moon".They're now doing the same to the earth.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</id>
	<title>crap</title>
	<author>Anonymous</author>
	<datestamp>1260266040000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext><p>Now the ecozealots will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.</p></htmltext>
<tokenext>Now the ecozealots will decry our spoiling of the natural martial environment , and will protest any attempt at colonization or terraformation as the destruction of a precious natural world .</tokentext>
<sentencetext>Now the ecozealots will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30375152</id>
	<title>Re:I do hope...</title>
	<author>SolitaryMan</author>
	<datestamp>1259574300000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I'd say that the fact that there is life on Mars, the planet closest to Earth, will give +100 points to the theory of extraterrestrial Earth life origin.</htmltext>
<tokenext>I 'd say that the fact that there is life on Mars , the planet closest to Earth , will give + 100 points to the theory of extraterrestrial Earth life origin .</tokentext>
<sentencetext>I'd say that the fact that there is life on Mars, the planet closest to Earth, will give +100 points to the theory of extraterrestrial Earth life origin.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372536</id>
	<title>Re:option C</title>
	<author>Anonymous</author>
	<datestamp>1260278460000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>You know what he meant.</p></htmltext>
<tokenext>You know what he meant .</tokentext>
<sentencetext>You know what he meant.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373866</id>
	<title>The Great Filter</title>
	<author>sevenfactorial</author>
	<datestamp>1260290400000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>As Nick Boston pointed out (http://www.nickbostrom.com/extraterrestrial.pdf)</p><p>this is the worst news the human race has ever received.</p><p>The idea is that the Fermi Paradox must be the result of a Great Filter which stymies the creation of long lived intelligent races.  The easier it is for life to evolve, the more likely it is that the Filter lies ahead of us, rather than behind.</p><p>Therefore microbes on Mars is bad bad news.</p></htmltext>
<tokenext>As Nick Boston pointed out ( http : //www.nickbostrom.com/extraterrestrial.pdf ) this is the worst news the human race has ever received.The idea is that the Fermi Paradox must be the result of a Great Filter which stymies the creation of long lived intelligent races .
The easier it is for life to evolve , the more likely it is that the Filter lies ahead of us , rather than behind.Therefore microbes on Mars is bad bad news .</tokentext>
<sentencetext>As Nick Boston pointed out (http://www.nickbostrom.com/extraterrestrial.pdf)this is the worst news the human race has ever received.The idea is that the Fermi Paradox must be the result of a Great Filter which stymies the creation of long lived intelligent races.
The easier it is for life to evolve, the more likely it is that the Filter lies ahead of us, rather than behind.Therefore microbes on Mars is bad bad news.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371300</id>
	<title>Re:I do hope...</title>
	<author>d0rp</author>
	<datestamp>1260271320000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I'm sure that's at least partially because the show got cancelled and they needed an ending fast.</htmltext>
<tokenext>I 'm sure that 's at least partially because the show got cancelled and they needed an ending fast .</tokentext>
<sentencetext>I'm sure that's at least partially because the show got cancelled and they needed an ending fast.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370312</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370714</id>
	<title>Re:Is it possible?</title>
	<author>vlm</author>
	<datestamp>1260268740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>Could it be possible that there was life on mars... and not any more? Those long dead critters are continuing to decay and release the gas.</p></div><p>Coal, Oil wells, and NatGas wells are basically the same thing.  If those deposits existed on mars, King Bush II and Haliburton would have been invading Mars for Oil rather than mostly innocent middle eastern countries for Oil.  Therefore, theres no hydrocarbon fields on Mars.  So, if the methane isn't from fossils, its from modern/current critters...</p><p>Methane is unstable on the order of centuries in the martian atmosphere, so they all died off VERY recently, not so "long dead" as you might think.</p></div>
	</htmltext>
<tokenext>Could it be possible that there was life on mars... and not any more ?
Those long dead critters are continuing to decay and release the gas.Coal , Oil wells , and NatGas wells are basically the same thing .
If those deposits existed on mars , King Bush II and Haliburton would have been invading Mars for Oil rather than mostly innocent middle eastern countries for Oil .
Therefore , theres no hydrocarbon fields on Mars .
So , if the methane is n't from fossils , its from modern/current critters...Methane is unstable on the order of centuries in the martian atmosphere , so they all died off VERY recently , not so " long dead " as you might think .</tokentext>
<sentencetext>Could it be possible that there was life on mars... and not any more?
Those long dead critters are continuing to decay and release the gas.Coal, Oil wells, and NatGas wells are basically the same thing.
If those deposits existed on mars, King Bush II and Haliburton would have been invading Mars for Oil rather than mostly innocent middle eastern countries for Oil.
Therefore, theres no hydrocarbon fields on Mars.
So, if the methane isn't from fossils, its from modern/current critters...Methane is unstable on the order of centuries in the martian atmosphere, so they all died off VERY recently, not so "long dead" as you might think.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371412</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260271920000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><blockquote><div><p>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment.</p></div></blockquote><p>Yeah, like what is up that, Dude?</p></div>
	</htmltext>
<tokenext>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment.Yeah , like what is up that , Dude ?</tokentext>
<sentencetext>This is like the fifth post on this article that has done the thing where a sentence starts in the title and finishes in the comment.Yeah, like what is up that, Dude?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370462</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370358</id>
	<title>Damn bleching Martian microbes.</title>
	<author>jameskojiro</author>
	<datestamp>1260266940000</datestamp>
	<modclass>Troll</modclass>
	<modscore>0</modscore>
	<htmltext><p>They are farting methane and causing Martian Warming!!!!!!</p><p>I say we put a carbon tax on them, maybe after not collecting any monies from them for a few decades, the U.N. will get serious about sending someone to Mars, even if it is only to send someone with a sternly worded letter....</p></htmltext>
<tokenext>They are farting methane and causing Martian Warming ! ! ! ! !
! I say we put a carbon tax on them , maybe after not collecting any monies from them for a few decades , the U.N. will get serious about sending someone to Mars , even if it is only to send someone with a sternly worded letter... .</tokentext>
<sentencetext>They are farting methane and causing Martian Warming!!!!!
!I say we put a carbon tax on them, maybe after not collecting any monies from them for a few decades, the U.N. will get serious about sending someone to Mars, even if it is only to send someone with a sternly worded letter....</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370562</id>
	<title>Re:Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1260268020000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>1</modscore>
	<htmltext>There is a definite pattern to these press releases.  If they already know something and want to very slowly let the public in on it, it would look exactly like this.  Water on the moon, methan on Mars, etc.  Instead of slowly acclimating the public to the idea of extraterrestrial life via all these little baby steps, why don't they just tell us what they know?  Obviously there's no civilizations on Mars or the moon so we are talking about microscopic life-forms here.  Are they afraid there's going to be rioting in the streets if they tell the public that they believe there is microbial life on Mars?  How silly.  For once I wish this government would treat us like adults.  Adults would respond to such a prospect with fascination, not fear.</htmltext>
<tokenext>There is a definite pattern to these press releases .
If they already know something and want to very slowly let the public in on it , it would look exactly like this .
Water on the moon , methan on Mars , etc .
Instead of slowly acclimating the public to the idea of extraterrestrial life via all these little baby steps , why do n't they just tell us what they know ?
Obviously there 's no civilizations on Mars or the moon so we are talking about microscopic life-forms here .
Are they afraid there 's going to be rioting in the streets if they tell the public that they believe there is microbial life on Mars ?
How silly .
For once I wish this government would treat us like adults .
Adults would respond to such a prospect with fascination , not fear .</tokentext>
<sentencetext>There is a definite pattern to these press releases.
If they already know something and want to very slowly let the public in on it, it would look exactly like this.
Water on the moon, methan on Mars, etc.
Instead of slowly acclimating the public to the idea of extraterrestrial life via all these little baby steps, why don't they just tell us what they know?
Obviously there's no civilizations on Mars or the moon so we are talking about microscopic life-forms here.
Are they afraid there's going to be rioting in the streets if they tell the public that they believe there is microbial life on Mars?
How silly.
For once I wish this government would treat us like adults.
Adults would respond to such a prospect with fascination, not fear.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30375764</id>
	<title>Re:I do hope...</title>
	<author>vegiVamp</author>
	<datestamp>1259584260000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>From that amazon page:<br>&gt; Ward and Brownlee admit that "It is very difficult to do statistics with an N of 1. But in our defense, we have staked out a position rarely articulated but increasingly accepted by many astrobiologists."<br><br>So, they have realised that their sample is statistically insignificant, and have thus substituted it with "everybody does it".</htmltext>
<tokenext>From that amazon page : &gt; Ward and Brownlee admit that " It is very difficult to do statistics with an N of 1 .
But in our defense , we have staked out a position rarely articulated but increasingly accepted by many astrobiologists .
" So , they have realised that their sample is statistically insignificant , and have thus substituted it with " everybody does it " .</tokentext>
<sentencetext>From that amazon page:&gt; Ward and Brownlee admit that "It is very difficult to do statistics with an N of 1.
But in our defense, we have staked out a position rarely articulated but increasingly accepted by many astrobiologists.
"So, they have realised that their sample is statistically insignificant, and have thus substituted it with "everybody does it".</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370332</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370616</id>
	<title>Re:option C</title>
	<author>Anonymous</author>
	<datestamp>1260268320000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>You should patent that idea... it seems broad enough.</p></htmltext>
<tokenext>You should patent that idea... it seems broad enough .</tokentext>
<sentencetext>You should patent that idea... it seems broad enough.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370142</id>
	<title>If you think "Big Bang" is inappropriate...</title>
	<author>R2.0</author>
	<datestamp>1260266040000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>"Mars Farts"</p></htmltext>
<tokenext>" Mars Farts "</tokentext>
<sentencetext>"Mars Farts"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370552</id>
	<title>Re:Is it possible?</title>
	<author>Anonymous</author>
	<datestamp>1260267960000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Did something major happened to the environment there? Suddenly burying large regions of the original surface? And anything living there? Something like an asteroid impact? Volcanic activity? Hellas Planitia? Large methane and other deposits under kilometres of debris? Trapped underground would there be enough rising up to create the detected amounts? Is there MORE THAN ONE potential source, or a question of a primary source? Maybe.</htmltext>
<tokenext>Did something major happened to the environment there ?
Suddenly burying large regions of the original surface ?
And anything living there ?
Something like an asteroid impact ?
Volcanic activity ?
Hellas Planitia ?
Large methane and other deposits under kilometres of debris ?
Trapped underground would there be enough rising up to create the detected amounts ?
Is there MORE THAN ONE potential source , or a question of a primary source ?
Maybe .</tokentext>
<sentencetext>Did something major happened to the environment there?
Suddenly burying large regions of the original surface?
And anything living there?
Something like an asteroid impact?
Volcanic activity?
Hellas Planitia?
Large methane and other deposits under kilometres of debris?
Trapped underground would there be enough rising up to create the detected amounts?
Is there MORE THAN ONE potential source, or a question of a primary source?
Maybe.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370606</id>
	<title>Re:Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1260268260000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Yet another the theory to support the fact that, mens are from mars and women are from venus!</htmltext>
<tokenext>Yet another the theory to support the fact that , mens are from mars and women are from venus !</tokentext>
<sentencetext>Yet another the theory to support the fact that, mens are from mars and women are from venus!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371440</id>
	<title>Heh.</title>
	<author>Anonymous</author>
	<datestamp>1260272040000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I can picture it now:<br>Herd of cows spotted on Mars</p><p>Article date: April 1, 2010.</p></htmltext>
<tokenext>I can picture it now : Herd of cows spotted on MarsArticle date : April 1 , 2010 .</tokentext>
<sentencetext>I can picture it now:Herd of cows spotted on MarsArticle date: April 1, 2010.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372144</id>
	<title>Is there life on Mars?</title>
	<author>Anonymous</author>
	<datestamp>1260276120000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>obligatory Bowie quote</p></div>
	</htmltext>
<tokenext>obligatory Bowie quote</tokentext>
<sentencetext>obligatory Bowie quote
	</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370674</id>
	<title>Frist stoP</title>
	<author>Anonymous</author>
	<datestamp>1260268560000</datestamp>
	<modclass>Flamebait</modclass>
	<modscore>-1</modscore>
	<htmltext><A HREF="http://goat.cx/" title="goat.cx" rel="nofollow">similarly grisly but it's not a of the Above problem; a few Number oF FreeBSD [samag.com] in the dicks produced</a> [goat.cx]</htmltext>
<tokenext>similarly grisly but it 's not a of the Above problem ; a few Number oF FreeBSD [ samag.com ] in the dicks produced [ goat.cx ]</tokentext>
<sentencetext>similarly grisly but it's not a of the Above problem; a few Number oF FreeBSD [samag.com] in the dicks produced [goat.cx]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371000</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260269940000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Shit! I forgot I modded this guy up, and then commented! Someone please mod him back up. I don't think comments about other comments are off-topic (although the trolls seem to).</htmltext>
<tokenext>Shit !
I forgot I modded this guy up , and then commented !
Someone please mod him back up .
I do n't think comments about other comments are off-topic ( although the trolls seem to ) .</tokentext>
<sentencetext>Shit!
I forgot I modded this guy up, and then commented!
Someone please mod him back up.
I don't think comments about other comments are off-topic (although the trolls seem to).</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370462</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370914</id>
	<title>Obligatory</title>
	<author>Anonymous</author>
	<datestamp>1260269640000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I for one welcome our flatulent Martian overlords.</p></htmltext>
<tokenext>I for one welcome our flatulent Martian overlords .</tokentext>
<sentencetext>I for one welcome our flatulent Martian overlords.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373266</id>
	<title>Re:don't really understand the point</title>
	<author>ceoyoyo</author>
	<datestamp>1260284220000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>From the summary:</p><p>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism."</p><p>I presume option 1, "reactions between volcanic rock and water" is the olivine-water reaction.</p><p>Option 1 is interesting because it means there's enough water on Mars in a convenient form (likely liquid) to produce the observed methane.</p><p>Option 2 is of course interesting because it means there's life.</p></htmltext>
<tokenext>From the summary : " So two theories remain : either the gas is created as a by-product of reactions between volcanic rock and water , or it is a by-product of a lifeform 's metabolism .
" I presume option 1 , " reactions between volcanic rock and water " is the olivine-water reaction.Option 1 is interesting because it means there 's enough water on Mars in a convenient form ( likely liquid ) to produce the observed methane.Option 2 is of course interesting because it means there 's life .</tokentext>
<sentencetext>From the summary:"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.
"I presume option 1, "reactions between volcanic rock and water" is the olivine-water reaction.Option 1 is interesting because it means there's enough water on Mars in a convenient form (likely liquid) to produce the observed methane.Option 2 is of course interesting because it means there's life.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370446</id>
	<title>Re:option C</title>
	<author>SpydeZ</author>
	<datestamp>1260267300000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Nobody expected the Martian Inquisition!</htmltext>
<tokenext>Nobody expected the Martian Inquisition !</tokentext>
<sentencetext>Nobody expected the Martian Inquisition!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370768</id>
	<title>Re:Is it possible?</title>
	<author>Java Pimp</author>
	<datestamp>1260268980000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Actually, decay is caused by living microbes breaking down the organic matter (and releasing methane). No life means no decay (in the metabolizing sense). Dead organic matter with nothing to cause decay would likely dry up and turn to dust or become fossilized.</p></htmltext>
<tokenext>Actually , decay is caused by living microbes breaking down the organic matter ( and releasing methane ) .
No life means no decay ( in the metabolizing sense ) .
Dead organic matter with nothing to cause decay would likely dry up and turn to dust or become fossilized .</tokentext>
<sentencetext>Actually, decay is caused by living microbes breaking down the organic matter (and releasing methane).
No life means no decay (in the metabolizing sense).
Dead organic matter with nothing to cause decay would likely dry up and turn to dust or become fossilized.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371570</id>
	<title>Re:option C</title>
	<author>Anonymous</author>
	<datestamp>1260272820000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>D) It's been trapped for millions of years and is only now being released due to crust events, like heating or expansion.</p><p>I love how people think it 'must be this', or it 'must be that', as if those are the only possible explanations available. Fact is there are a 1000 different reasons why this might be happening.</p><p>Unfortunately, with regards to Mars, I won't be pleased until we have a colony living on the surface. Until then, we're doing science from afar. And yes, I'm fully aware of the improvements in instrumentation. This does not negate the human necessity for physical exploration.</p></htmltext>
<tokenext>D ) It 's been trapped for millions of years and is only now being released due to crust events , like heating or expansion.I love how people think it 'must be this ' , or it 'must be that ' , as if those are the only possible explanations available .
Fact is there are a 1000 different reasons why this might be happening.Unfortunately , with regards to Mars , I wo n't be pleased until we have a colony living on the surface .
Until then , we 're doing science from afar .
And yes , I 'm fully aware of the improvements in instrumentation .
This does not negate the human necessity for physical exploration .</tokentext>
<sentencetext>D) It's been trapped for millions of years and is only now being released due to crust events, like heating or expansion.I love how people think it 'must be this', or it 'must be that', as if those are the only possible explanations available.
Fact is there are a 1000 different reasons why this might be happening.Unfortunately, with regards to Mars, I won't be pleased until we have a colony living on the surface.
Until then, we're doing science from afar.
And yes, I'm fully aware of the improvements in instrumentation.
This does not negate the human necessity for physical exploration.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370280</id>
	<title>lifeforms, lifeforms, precious little lifeforms</title>
	<author>Anonymous</author>
	<datestamp>1260266760000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>where are you?</p></htmltext>
<tokenext>where are you ?</tokentext>
<sentencetext>where are you?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370712</id>
	<title>Re:option C</title>
	<author>Anonymous</author>
	<datestamp>1260268740000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>And Occam's Razor suggests the former. That about ends it for the 'life on Mars' crew. Get back to work.</p></htmltext>
<tokenext>And Occam 's Razor suggests the former .
That about ends it for the 'life on Mars ' crew .
Get back to work .</tokentext>
<sentencetext>And Occam's Razor suggests the former.
That about ends it for the 'life on Mars' crew.
Get back to work.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371410</id>
	<title>Re:I do hope...</title>
	<author>tbischel</author>
	<datestamp>1260271920000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>That it is life. I've said it before so I won't reiterate with a long post, but if there's life on Mars, that proves life isn't just unique to Earth. This planet isn't a fluke. If there's life on Mars, then it can be *anywhere*</p><p>What an amazing thing that would be.</p><p>Almost as good as the BBC TV series...</p></div><p>I don't think life on Mars precludes the notion that they came from a common ancestor... Martian or Earth originated meteors could crash into their counterparts, transporting life between them.    The "fluke" part would still be a possibility in this case.</p></div>
	</htmltext>
<tokenext>That it is life .
I 've said it before so I wo n't reiterate with a long post , but if there 's life on Mars , that proves life is n't just unique to Earth .
This planet is n't a fluke .
If there 's life on Mars , then it can be * anywhere * What an amazing thing that would be.Almost as good as the BBC TV series...I do n't think life on Mars precludes the notion that they came from a common ancestor... Martian or Earth originated meteors could crash into their counterparts , transporting life between them .
The " fluke " part would still be a possibility in this case .</tokentext>
<sentencetext>That it is life.
I've said it before so I won't reiterate with a long post, but if there's life on Mars, that proves life isn't just unique to Earth.
This planet isn't a fluke.
If there's life on Mars, then it can be *anywhere*What an amazing thing that would be.Almost as good as the BBC TV series...I don't think life on Mars precludes the notion that they came from a common ancestor... Martian or Earth originated meteors could crash into their counterparts, transporting life between them.
The "fluke" part would still be a possibility in this case.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371092</id>
	<title>Global Warming disproven ONCE AGAIN!</title>
	<author>GodfatherofSoul</author>
	<datestamp>1260270360000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>How is it possible for there to be methane on Mars, yet it's a cold as ice.  You FAIL Al Gore!</htmltext>
<tokenext>How is it possible for there to be methane on Mars , yet it 's a cold as ice .
You FAIL Al Gore !</tokentext>
<sentencetext>How is it possible for there to be methane on Mars, yet it's a cold as ice.
You FAIL Al Gore!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370538</id>
	<title>I for one....</title>
	<author>Anonymous</author>
	<datestamp>1260267900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>...welcome our new flatulent Martian overlords.</p></htmltext>
<tokenext>...welcome our new flatulent Martian overlords .</tokentext>
<sentencetext>...welcome our new flatulent Martian overlords.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30376740</id>
	<title>Don't forget the formaldehyde</title>
	<author>mikesum</author>
	<datestamp>1259594940000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><a href="http://www.wired.com/science/space/news/2005/05/67315" title="wired.com" rel="nofollow">http://www.wired.com/science/space/news/2005/05/67315</a> [wired.com]</htmltext>
<tokenext>http : //www.wired.com/science/space/news/2005/05/67315 [ wired.com ]</tokentext>
<sentencetext>http://www.wired.com/science/space/news/2005/05/67315 [wired.com]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370178</id>
	<title>Underground methane leaking?</title>
	<author>Glock27</author>
	<datestamp>1260266280000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>4</modscore>
	<htmltext>Another possible explanation might be ancient underground methane deposits leaking into the Martian atmosphere...if this has been ruled out, how?
<p>
It seems possible that life existed in the distant past on Mars, leaving behind methane deposits much like oil and natural gas deposits here on Earth...</p></htmltext>
<tokenext>Another possible explanation might be ancient underground methane deposits leaking into the Martian atmosphere...if this has been ruled out , how ?
It seems possible that life existed in the distant past on Mars , leaving behind methane deposits much like oil and natural gas deposits here on Earth.. .</tokentext>
<sentencetext>Another possible explanation might be ancient underground methane deposits leaking into the Martian atmosphere...if this has been ruled out, how?
It seems possible that life existed in the distant past on Mars, leaving behind methane deposits much like oil and natural gas deposits here on Earth...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370332</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260266880000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>4</modscore>
	<htmltext>It's not just religious people who attempt to <a href="http://www.amazon.com/Rare-Earth-Complex-Uncommon-Universe/dp/0387952896/ref=sr\_1\_4?ie=UTF8&amp;s=books&amp;qid=1260306430&amp;sr=8-4" title="amazon.com" rel="nofollow">rationalize</a> [amazon.com] the fact Earth may be the only place with intelligent life.</htmltext>
<tokenext>It 's not just religious people who attempt to rationalize [ amazon.com ] the fact Earth may be the only place with intelligent life .</tokentext>
<sentencetext>It's not just religious people who attempt to rationalize [amazon.com] the fact Earth may be the only place with intelligent life.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370248</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373314</id>
	<title>Re:Cows</title>
	<author>formfeed</author>
	<datestamp>1260284580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Save the planet, eat a cow.</htmltext>
<tokenext>Save the planet , eat a cow .</tokentext>
<sentencetext>Save the planet, eat a cow.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370724</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371386</id>
	<title>Re:option C</title>
	<author>kingmundi</author>
	<datestamp>1260271740000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p>I probably should have put...<br>there are probably other theories out there besides those two.  And its always important to keep an open mind to other possibilities.</p><p>Personally, I tend to favour the water interacting with olivine (serpentization).  The two main plumes of methane occur at points in Mars where there are cracks to the interior, and/or have a lot of exposed olivine.  Of course, I am not a scientist, so I don't even give my own opinion much weight on the matter.  Its possible that the presence of olivine and water is the ingredients that life needs to hang on in the harsh martian environment.  It is interesting either way.</p><p>One plume is at <a href="http://en.wikipedia.org/wiki/Elysium\_Planitia" title="wikipedia.org">Elysium Planitia</a> [wikipedia.org]<br>One plume is at <a href="http://en.wikipedia.org/wiki/Memnonia\_(Mars)" title="wikipedia.org">Memnonia</a> [wikipedia.org]<br>A similar (vaguely) plume on earth is at <a href="http://en.wikipedia.org/wiki/Petroleum\_seep" title="wikipedia.org">Petroleum Seep</a> [wikipedia.org]</p></htmltext>
<tokenext>I probably should have put...there are probably other theories out there besides those two .
And its always important to keep an open mind to other possibilities.Personally , I tend to favour the water interacting with olivine ( serpentization ) .
The two main plumes of methane occur at points in Mars where there are cracks to the interior , and/or have a lot of exposed olivine .
Of course , I am not a scientist , so I do n't even give my own opinion much weight on the matter .
Its possible that the presence of olivine and water is the ingredients that life needs to hang on in the harsh martian environment .
It is interesting either way.One plume is at Elysium Planitia [ wikipedia.org ] One plume is at Memnonia [ wikipedia.org ] A similar ( vaguely ) plume on earth is at Petroleum Seep [ wikipedia.org ]</tokentext>
<sentencetext>I probably should have put...there are probably other theories out there besides those two.
And its always important to keep an open mind to other possibilities.Personally, I tend to favour the water interacting with olivine (serpentization).
The two main plumes of methane occur at points in Mars where there are cracks to the interior, and/or have a lot of exposed olivine.
Of course, I am not a scientist, so I don't even give my own opinion much weight on the matter.
Its possible that the presence of olivine and water is the ingredients that life needs to hang on in the harsh martian environment.
It is interesting either way.One plume is at Elysium Planitia [wikipedia.org]One plume is at Memnonia [wikipedia.org]A similar (vaguely) plume on earth is at Petroleum Seep [wikipedia.org]</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370626</id>
	<title>Re:This must mean...</title>
	<author>Neanderthal Ninny</author>
	<datestamp>1260268380000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>"Excuse me" said Marvin the Martian.</p></htmltext>
<tokenext>" Excuse me " said Marvin the Martian .</tokentext>
<sentencetext>"Excuse me" said Marvin the Martian.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370112</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371012</id>
	<title>Re:option C</title>
	<author>noidentity</author>
	<datestamp>1260270000000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><blockquote><div><p>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism."

</p><p>Or C: There is some, as of yet, unidentified method of methane production.</p></div>

</blockquote><p>Taco Bell?</p></div>
	</htmltext>
<tokenext>" So two theories remain : either the gas is created as a by-product of reactions between volcanic rock and water , or it is a by-product of a lifeform 's metabolism .
" Or C : There is some , as of yet , unidentified method of methane production .
Taco Bell ?</tokentext>
<sentencetext>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.
"

Or C: There is some, as of yet, unidentified method of methane production.
Taco Bell?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370112</id>
	<title>This must mean...</title>
	<author>Anonymous</author>
	<datestamp>1260265860000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext>that Martians need some beano eh? Also, first post BTW...</htmltext>
<tokenext>that Martians need some beano eh ?
Also , first post BTW.. .</tokentext>
<sentencetext>that Martians need some beano eh?
Also, first post BTW...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370848</id>
	<title>Re:"The Doctor" Told me....</title>
	<author>SomeJoel</author>
	<datestamp>1260269340000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>"The Doctor" Told me...</p></div><p>Who?</p></div>
	</htmltext>
<tokenext>" The Doctor " Told me...Who ?</tokentext>
<sentencetext>"The Doctor" Told me...Who?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370404</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371212</id>
	<title>Just remember.....</title>
	<author>Anonymous</author>
	<datestamp>1260270900000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Don't light any matches.</p></htmltext>
<tokenext>Do n't light any matches .</tokentext>
<sentencetext>Don't light any matches.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30373304</id>
	<title>Cows?</title>
	<author>formfeed</author>
	<datestamp>1260284460000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Large underground herds of cows, that is.</htmltext>
<tokenext>Large underground herds of cows , that is .</tokentext>
<sentencetext>Large underground herds of cows, that is.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370248</id>
	<title>Re:I do hope...</title>
	<author>Anonymous</author>
	<datestamp>1260266580000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Unless it's human-level intelligent life, religious people will rationalize it: "Well only \_Earth\_ has \_intelligent\_ life in the Universe!"</p></htmltext>
<tokenext>Unless it 's human-level intelligent life , religious people will rationalize it : " Well only \ _Earth \ _ has \ _intelligent \ _ life in the Universe !
"</tokentext>
<sentencetext>Unless it's human-level intelligent life, religious people will rationalize it: "Well only \_Earth\_ has \_intelligent\_ life in the Universe!
"</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370444</id>
	<title>Re:crap</title>
	<author>Anonymous</author>
	<datestamp>1260267300000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Protest away! I'm sure we can find a large rock up there that they can chain themselves to...</p></htmltext>
<tokenext>Protest away !
I 'm sure we can find a large rock up there that they can chain themselves to.. .</tokentext>
<sentencetext>Protest away!
I'm sure we can find a large rock up there that they can chain themselves to...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370594</id>
	<title>Trespassing?</title>
	<author>Anonymous</author>
	<datestamp>1260268200000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Does this mean our rovers are trespassing on Mars?</p></htmltext>
<tokenext>Does this mean our rovers are trespassing on Mars ?</tokentext>
<sentencetext>Does this mean our rovers are trespassing on Mars?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</id>
	<title>don't really understand the point</title>
	<author>khallow</author>
	<datestamp>1260268980000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext>As I understand it, we know there's <a href="http://www.psrd.hawaii.edu/Nov03/olivine.html" title="hawaii.edu">olivine on Mars</a> [hawaii.edu] and that there's <a href="http://www.timesonline.co.uk/tol/news/science/space/article6849802.ece" title="timesonline.co.uk">water on Mars</a> [timesonline.co.uk]. Assuming the laws of physics operate the same on Mars as on Earth, then you have all the explanation you need for methane on Mars. <a href="http://en.wikipedia.org/wiki/Serpentinite" title="wikipedia.org">Serpentinization</a> [wikipedia.org] is the process of reacting olivine with water. It generates methane as a byproduct.<br> <br>

The question isn't whether serpentinization is a source of methane, but rather whether it is the majority source or not. My take is that if the methane production was due to life on Mars, there'd be a lot more methane being produced than a few hundred tons a day. I don't see life on Mars staying in one place over millions much less hundreds of millions of years. But I suppose there's a chance it could happen that way (say if life on Mars is a relatively recent phenoma).</htmltext>
<tokenext>As I understand it , we know there 's olivine on Mars [ hawaii.edu ] and that there 's water on Mars [ timesonline.co.uk ] .
Assuming the laws of physics operate the same on Mars as on Earth , then you have all the explanation you need for methane on Mars .
Serpentinization [ wikipedia.org ] is the process of reacting olivine with water .
It generates methane as a byproduct .
The question is n't whether serpentinization is a source of methane , but rather whether it is the majority source or not .
My take is that if the methane production was due to life on Mars , there 'd be a lot more methane being produced than a few hundred tons a day .
I do n't see life on Mars staying in one place over millions much less hundreds of millions of years .
But I suppose there 's a chance it could happen that way ( say if life on Mars is a relatively recent phenoma ) .</tokentext>
<sentencetext>As I understand it, we know there's olivine on Mars [hawaii.edu] and that there's water on Mars [timesonline.co.uk].
Assuming the laws of physics operate the same on Mars as on Earth, then you have all the explanation you need for methane on Mars.
Serpentinization [wikipedia.org] is the process of reacting olivine with water.
It generates methane as a byproduct.
The question isn't whether serpentinization is a source of methane, but rather whether it is the majority source or not.
My take is that if the methane production was due to life on Mars, there'd be a lot more methane being produced than a few hundred tons a day.
I don't see life on Mars staying in one place over millions much less hundreds of millions of years.
But I suppose there's a chance it could happen that way (say if life on Mars is a relatively recent phenoma).</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30376520</id>
	<title>Re:Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1259593320000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>

<b>I'm not sure which country that you live in, but where I live, the press and the scientists aren't controlled by the government.</b> <br> <br>

Wow, it's nice to meet someone from Somalia.</htmltext>
<tokenext>I 'm not sure which country that you live in , but where I live , the press and the scientists are n't controlled by the government .
Wow , it 's nice to meet someone from Somalia .</tokentext>
<sentencetext>

I'm not sure which country that you live in, but where I live, the press and the scientists aren't controlled by the government.
Wow, it's nice to meet someone from Somalia.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370962</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</id>
	<title>option C</title>
	<author>kingmundi</author>
	<datestamp>1260266460000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>5</modscore>
	<htmltext><p>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism."</p><p>Or C: There is some, as of yet, unidentified method of methane production.</p></htmltext>
<tokenext>" So two theories remain : either the gas is created as a by-product of reactions between volcanic rock and water , or it is a by-product of a lifeform 's metabolism .
" Or C : There is some , as of yet , unidentified method of methane production .</tokentext>
<sentencetext>"So two theories remain: either the gas is created as a by-product of reactions between volcanic rock and water, or it is a by-product of a lifeform's metabolism.
"Or C: There is some, as of yet, unidentified method of methane production.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30378782</id>
	<title>An obvious explanation:</title>
	<author>Anonymous</author>
	<datestamp>1259606760000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>It's just that the Martians have started to use the iFart app</p></htmltext>
<tokenext>It 's just that the Martians have started to use the iFart app</tokentext>
<sentencetext>It's just that the Martians have started to use the iFart app</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372772</id>
	<title>Re:option C</title>
	<author>ljw1004</author>
	<datestamp>1260280260000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>"I have a theory about why X happened"<br>"What's your theory?"<br>"That we don't know why X happened"</p></htmltext>
<tokenext>" I have a theory about why X happened " " What 's your theory ?
" " That we do n't know why X happened "</tokentext>
<sentencetext>"I have a theory about why X happened""What's your theory?
""That we don't know why X happened"</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372920</id>
	<title>Re:option C</title>
	<author>R3d M3rcury</author>
	<datestamp>1260281280000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Wait!  Are you telling me "Intelligent Design" isn't a theory?</p><p>(I figure everyone was going off on the whole global warming thing, I'd try new a tack.)</p></htmltext>
<tokenext>Wait !
Are you telling me " Intelligent Design " is n't a theory ?
( I figure everyone was going off on the whole global warming thing , I 'd try new a tack .
)</tokentext>
<sentencetext>Wait!
Are you telling me "Intelligent Design" isn't a theory?
(I figure everyone was going off on the whole global warming thing, I'd try new a tack.
)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370530</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372622</id>
	<title>Re:don't really understand the point</title>
	<author>geekoid</author>
	<datestamp>1260279000000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>doen't it require a temperature of about  250 F.  for that to happen?  Also a pretty good amount of tectonic activity?</p><p>"The question isn't whether serpentinization is a source of methane,"</p><p>actually that is the question.</p></htmltext>
<tokenext>doe n't it require a temperature of about 250 F. for that to happen ?
Also a pretty good amount of tectonic activity ?
" The question is n't whether serpentinization is a source of methane , " actually that is the question .</tokentext>
<sentencetext>doen't it require a temperature of about  250 F.  for that to happen?
Also a pretty good amount of tectonic activity?
"The question isn't whether serpentinization is a source of methane,"actually that is the question.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370766</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370710</id>
	<title>Another Proposed Answer: Olivine and Hydrothermal</title>
	<author>gpronger</author>
	<datestamp>1260268740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Back in March, there was an article in <a href="http://www.nature.com/news/2009/090327/full/news.2009.197.html" title="nature.com">"Nature News"</a> [nature.com](the Nature News article is subscription, but a decent summary was posted by <a href="http://209.157.64.200/focus/news/2217101/posts?page=6" title="209.157.64.200">"The Free Republic"</a> [209.157.64.200]) that the mineral Olivine when incorporated in a hydrothermal system may generate methane. <br> <br>

On Earth, the predominate source of methane is considered biological in origin, and the presence on Mars has been considered a possible indication of life on Mars. Recently, at the Lunar and Planetary Science Conference at The Woodlands, near Houston, Texas, researcher Bethany Ehlmann (a PhD student at Brown University in Providence, Rhode Island) proposed a geological process could be a potential source for methane. The article reports that under a hydrothermal process the mineral olivine can undergo conversion to serpentine, with methane and hydrogen as a by-product.<br> <br>

Not surprisingly, there are potential problems with the theory. Though the presence of the mineral could have been a source of methane, the surface mineral is ancient, 3.8BY. Too old to be the source of the methane currently detected. It may be though, that the conversion is active subsurface, and the generated methane reaches the surface via fissures, etc."</htmltext>
<tokenext>Back in March , there was an article in " Nature News " [ nature.com ] ( the Nature News article is subscription , but a decent summary was posted by " The Free Republic " [ 209.157.64.200 ] ) that the mineral Olivine when incorporated in a hydrothermal system may generate methane .
On Earth , the predominate source of methane is considered biological in origin , and the presence on Mars has been considered a possible indication of life on Mars .
Recently , at the Lunar and Planetary Science Conference at The Woodlands , near Houston , Texas , researcher Bethany Ehlmann ( a PhD student at Brown University in Providence , Rhode Island ) proposed a geological process could be a potential source for methane .
The article reports that under a hydrothermal process the mineral olivine can undergo conversion to serpentine , with methane and hydrogen as a by-product .
Not surprisingly , there are potential problems with the theory .
Though the presence of the mineral could have been a source of methane , the surface mineral is ancient , 3.8BY .
Too old to be the source of the methane currently detected .
It may be though , that the conversion is active subsurface , and the generated methane reaches the surface via fissures , etc .
"</tokentext>
<sentencetext>Back in March, there was an article in "Nature News" [nature.com](the Nature News article is subscription, but a decent summary was posted by "The Free Republic" [209.157.64.200]) that the mineral Olivine when incorporated in a hydrothermal system may generate methane.
On Earth, the predominate source of methane is considered biological in origin, and the presence on Mars has been considered a possible indication of life on Mars.
Recently, at the Lunar and Planetary Science Conference at The Woodlands, near Houston, Texas, researcher Bethany Ehlmann (a PhD student at Brown University in Providence, Rhode Island) proposed a geological process could be a potential source for methane.
The article reports that under a hydrothermal process the mineral olivine can undergo conversion to serpentine, with methane and hydrogen as a by-product.
Not surprisingly, there are potential problems with the theory.
Though the presence of the mineral could have been a source of methane, the surface mineral is ancient, 3.8BY.
Too old to be the source of the methane currently detected.
It may be though, that the conversion is active subsurface, and the generated methane reaches the surface via fissures, etc.
"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371278</id>
	<title>Re:Life on Mars</title>
	<author>meerling</author>
	<datestamp>1260271200000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext>Some of the recent studies show that it's incomplete magnetic field is actually accelerating the loss of atmosphere.<br>Apparently those magnetic domes that were once thought to help retain atmosphere are now acting like ski ramps to help the solar winds blow off more air than if Mars had no magnetic field whatsoever. That's really gotta suck.<br><br>Of course, that doesn't preclude the existence of some form of extremophile.<br>After all, it's had millions of years to adapt to the changing environment that is Mars.<br>On the other hand, that doesn't mean there is any life on Mars, just that we can't rule it out at this time.<br><br>So anyhow, do you know where I can get some more nurplex? This one lost it's flavor years ago...<nobr> <wbr></nobr>:-)</htmltext>
<tokenext>Some of the recent studies show that it 's incomplete magnetic field is actually accelerating the loss of atmosphere.Apparently those magnetic domes that were once thought to help retain atmosphere are now acting like ski ramps to help the solar winds blow off more air than if Mars had no magnetic field whatsoever .
That 's really got ta suck.Of course , that does n't preclude the existence of some form of extremophile.After all , it 's had millions of years to adapt to the changing environment that is Mars.On the other hand , that does n't mean there is any life on Mars , just that we ca n't rule it out at this time.So anyhow , do you know where I can get some more nurplex ?
This one lost it 's flavor years ago... : - )</tokentext>
<sentencetext>Some of the recent studies show that it's incomplete magnetic field is actually accelerating the loss of atmosphere.Apparently those magnetic domes that were once thought to help retain atmosphere are now acting like ski ramps to help the solar winds blow off more air than if Mars had no magnetic field whatsoever.
That's really gotta suck.Of course, that doesn't preclude the existence of some form of extremophile.After all, it's had millions of years to adapt to the changing environment that is Mars.On the other hand, that doesn't mean there is any life on Mars, just that we can't rule it out at this time.So anyhow, do you know where I can get some more nurplex?
This one lost it's flavor years ago... :-)</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371046</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371040</id>
	<title>Re:crap</title>
	<author>kaini</author>
	<datestamp>1260270120000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><div class="quote"><p>Now the ecozealots will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.</p></div><p>have a read of kim stanley robinson's mars trilogy. that's *exactly* what happens.</p></div>
	</htmltext>
<tokenext>Now the ecozealots will decry our spoiling of the natural martial environment , and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.have a read of kim stanley robinson 's mars trilogy .
that 's * exactly * what happens .</tokentext>
<sentencetext>Now the ecozealots will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.have a read of kim stanley robinson's mars trilogy.
that's *exactly* what happens.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370546</id>
	<title>Just ask the USS Reliant to stop by</title>
	<author>Anonymous</author>
	<datestamp>1260267900000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext>Who knows, it could just be a piece of pre-animate matter caught in the matrix.</htmltext>
<tokenext>Who knows , it could just be a piece of pre-animate matter caught in the matrix .</tokentext>
<sentencetext>Who knows, it could just be a piece of pre-animate matter caught in the matrix.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370990</id>
	<title>Re:Even more compelling</title>
	<author>Thinboy00</author>
	<datestamp>1260269880000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>What about the fundamentalists?  Do they count as adults?</p></htmltext>
<tokenext>What about the fundamentalists ?
Do they count as adults ?</tokentext>
<sentencetext>What about the fundamentalists?
Do they count as adults?</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370562</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371030</id>
	<title>Re:crap</title>
	<author>MightyMartian</author>
	<datestamp>1260270060000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>2</modscore>
	<htmltext><p>I would think before we start transporting over all our microbes, we might actually want to make a reasonable attempt at determining whether Mars has some of its own.  Certainly in the interests of biology and xenobiology this would be a critical bit of knowledge.  We ain't always gonna be stuck just in this solar system, and if there are a few spots in our neighborhood that harbor life, to assure that we gain as much knowledge as possible about alien biology and ecology, it's in our best interests to not piss in another swimming pool quite yet.</p><p>Besides, WTF do you think is going to happen?  Shell is going to start drilling for oil?  Strip mining?  Mars is still a very gravity well, and that means it's costly to get off the surface.  If you're looking for cheap hydrocarbons, comets, or possibly some place like Titan, would make much more sense.  If you're looking for metals, well, the Asteroid Belt is going to be far easier to access and pull resources from.</p><p>In short, other than perhaps long-term terraforming projects (which we're probably a few centuries away from having meaningful technical and engineering know-how to do) Mars will likely remain for the foreseeable future more of a scientific quest than a no holds barred push for cheap resources.  I mean, even if we did have cheap ways to achieve escape velocity on planets like Mars and Earth, it would probably take a few decades to do proper geological surveys.  Plenty of time for science before we chew up the surface.</p></htmltext>
<tokenext>I would think before we start transporting over all our microbes , we might actually want to make a reasonable attempt at determining whether Mars has some of its own .
Certainly in the interests of biology and xenobiology this would be a critical bit of knowledge .
We ai n't always gon na be stuck just in this solar system , and if there are a few spots in our neighborhood that harbor life , to assure that we gain as much knowledge as possible about alien biology and ecology , it 's in our best interests to not piss in another swimming pool quite yet.Besides , WTF do you think is going to happen ?
Shell is going to start drilling for oil ?
Strip mining ?
Mars is still a very gravity well , and that means it 's costly to get off the surface .
If you 're looking for cheap hydrocarbons , comets , or possibly some place like Titan , would make much more sense .
If you 're looking for metals , well , the Asteroid Belt is going to be far easier to access and pull resources from.In short , other than perhaps long-term terraforming projects ( which we 're probably a few centuries away from having meaningful technical and engineering know-how to do ) Mars will likely remain for the foreseeable future more of a scientific quest than a no holds barred push for cheap resources .
I mean , even if we did have cheap ways to achieve escape velocity on planets like Mars and Earth , it would probably take a few decades to do proper geological surveys .
Plenty of time for science before we chew up the surface .</tokentext>
<sentencetext>I would think before we start transporting over all our microbes, we might actually want to make a reasonable attempt at determining whether Mars has some of its own.
Certainly in the interests of biology and xenobiology this would be a critical bit of knowledge.
We ain't always gonna be stuck just in this solar system, and if there are a few spots in our neighborhood that harbor life, to assure that we gain as much knowledge as possible about alien biology and ecology, it's in our best interests to not piss in another swimming pool quite yet.Besides, WTF do you think is going to happen?
Shell is going to start drilling for oil?
Strip mining?
Mars is still a very gravity well, and that means it's costly to get off the surface.
If you're looking for cheap hydrocarbons, comets, or possibly some place like Titan, would make much more sense.
If you're looking for metals, well, the Asteroid Belt is going to be far easier to access and pull resources from.In short, other than perhaps long-term terraforming projects (which we're probably a few centuries away from having meaningful technical and engineering know-how to do) Mars will likely remain for the foreseeable future more of a scientific quest than a no holds barred push for cheap resources.
I mean, even if we did have cheap ways to achieve escape velocity on planets like Mars and Earth, it would probably take a few decades to do proper geological surveys.
Plenty of time for science before we chew up the surface.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371720</id>
	<title>Life on Mars. Smell it! Taste it!</title>
	<author>syousef</author>
	<datestamp>1260273660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>My GUT feeling is that there's life on mars. I can smell it. Hell I can almost taste it!</p><p>(The above is a joke. Actually I have no idea if there is life on Mars).</p></htmltext>
<tokenext>My GUT feeling is that there 's life on mars .
I can smell it .
Hell I can almost taste it !
( The above is a joke .
Actually I have no idea if there is life on Mars ) .</tokentext>
<sentencetext>My GUT feeling is that there's life on mars.
I can smell it.
Hell I can almost taste it!
(The above is a joke.
Actually I have no idea if there is life on Mars).</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371316</id>
	<title>Re:I do hope... you check history first.</title>
	<author>Anonymous</author>
	<datestamp>1260271440000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>1</modscore>
	<htmltext><p>Well, James Lovelock, in his Gaia book from the 80's, states that he compared<br>the<br>distance from thermodynamic equilibrium of the gas environments of Earth<br>and Mars ( he did it for NASA) and found...</p><p>There is life on Earth, and it sends the gas environment FAR from thermodynamic equilibrium!</p><p>There is no evidence for life on Mars because the gas environment is very close to, if not at,<br>thermodynamic equilibrium.  (NASA has a sad, and fires his ass.)</p><p>Let me know if this study changes his conclusions.</p></htmltext>
<tokenext>Well , James Lovelock , in his Gaia book from the 80 's , states that he comparedthedistance from thermodynamic equilibrium of the gas environments of Earthand Mars ( he did it for NASA ) and found...There is life on Earth , and it sends the gas environment FAR from thermodynamic equilibrium ! There is no evidence for life on Mars because the gas environment is very close to , if not at,thermodynamic equilibrium .
( NASA has a sad , and fires his ass .
) Let me know if this study changes his conclusions .</tokentext>
<sentencetext>Well, James Lovelock, in his Gaia book from the 80's, states that he comparedthedistance from thermodynamic equilibrium of the gas environments of Earthand Mars ( he did it for NASA) and found...There is life on Earth, and it sends the gas environment FAR from thermodynamic equilibrium!There is no evidence for life on Mars because the gas environment is very close to, if not at,thermodynamic equilibrium.
(NASA has a sad, and fires his ass.
)Let me know if this study changes his conclusions.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30400886</id>
	<title>Earth microbe that can survive on Mars</title>
	<author>robertinventor</author>
	<datestamp>1260542700000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Have you seen this - relevant to the discussion I think:
<a href="http://www.livescience.com/space/090718-survivor-microbe.html" title="livescience.com" rel="nofollow">http://www.livescience.com/space/090718-survivor-microbe.html</a> [livescience.com]

Could be something like this causing the methane on Mars. And whether or not, is reason to be very cautious about possibly accidentally introducing new Earth lifeforms to Mars in future space missions, until we know what effect they may have on the planet - and perhaps also on Earth if they get returned to Earth after evolving further on Mars.

(see my other posts to this topic for why I think this may be a cause for concern and caution until we know a lot more about terraforming).</htmltext>
<tokenext>Have you seen this - relevant to the discussion I think : http : //www.livescience.com/space/090718-survivor-microbe.html [ livescience.com ] Could be something like this causing the methane on Mars .
And whether or not , is reason to be very cautious about possibly accidentally introducing new Earth lifeforms to Mars in future space missions , until we know what effect they may have on the planet - and perhaps also on Earth if they get returned to Earth after evolving further on Mars .
( see my other posts to this topic for why I think this may be a cause for concern and caution until we know a lot more about terraforming ) .</tokentext>
<sentencetext>Have you seen this - relevant to the discussion I think:
http://www.livescience.com/space/090718-survivor-microbe.html [livescience.com]

Could be something like this causing the methane on Mars.
And whether or not, is reason to be very cautious about possibly accidentally introducing new Earth lifeforms to Mars in future space missions, until we know what effect they may have on the planet - and perhaps also on Earth if they get returned to Earth after evolving further on Mars.
(see my other posts to this topic for why I think this may be a cause for concern and caution until we know a lot more about terraforming).</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30377902</id>
	<title>Re:Underground methane leaking?</title>
	<author>Taibhsear</author>
	<datestamp>1259602140000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>The tectonics may have stopped but IIRC the volcanic activity still occurs. I would imagine all it would take is a lava flow to cover organic material in order to create methane traps. Unless Martian plants had legs that is...</p></htmltext>
<tokenext>The tectonics may have stopped but IIRC the volcanic activity still occurs .
I would imagine all it would take is a lava flow to cover organic material in order to create methane traps .
Unless Martian plants had legs that is.. .</tokentext>
<sentencetext>The tectonics may have stopped but IIRC the volcanic activity still occurs.
I would imagine all it would take is a lava flow to cover organic material in order to create methane traps.
Unless Martian plants had legs that is...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370752</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372550</id>
	<title>Methane?</title>
	<author>Lost Penguin</author>
	<datestamp>1260278520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Mine is made by VP Racing....</htmltext>
<tokenext>Mine is made by VP Racing... .</tokentext>
<sentencetext>Mine is made by VP Racing....</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370910</id>
	<title>Re:option C</title>
	<author>jpmorgan</author>
	<datestamp>1260269580000</datestamp>
	<modclass>Troll</modclass>
	<modscore>1</modscore>
	<htmltext><p>If only the IPCC  members had such depth of insight.</p></htmltext>
<tokenext>If only the IPCC members had such depth of insight .</tokentext>
<sentencetext>If only the IPCC  members had such depth of insight.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370224</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370438</id>
	<title>Mars is where the Bugalo Roam...</title>
	<author>jameskojiro</author>
	<datestamp>1260267240000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>0</modscore>
	<htmltext><p>The Methane is being caused by the Bugalo who eat martian sagebrush and fart methane.   I say we go there and start ranching them, maybe buy the whole planet using a giant diamond as payment or something.    Of course China will beat us to the punch and we will have gone the Wong way.....</p></htmltext>
<tokenext>The Methane is being caused by the Bugalo who eat martian sagebrush and fart methane .
I say we go there and start ranching them , maybe buy the whole planet using a giant diamond as payment or something .
Of course China will beat us to the punch and we will have gone the Wong way.... .</tokentext>
<sentencetext>The Methane is being caused by the Bugalo who eat martian sagebrush and fart methane.
I say we go there and start ranching them, maybe buy the whole planet using a giant diamond as payment or something.
Of course China will beat us to the punch and we will have gone the Wong way.....</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371338</id>
	<title>Re:Another Proposed Answer: Olivine and Hydrotherm</title>
	<author>Omeganon</author>
	<datestamp>1260271560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>That's a pretty long-winded. Why didn't you just say "...theories remain: either the gas is created as a by-product of reactions between volcanic rock and water". Oh, right, the clip and story already did.<nobr> <wbr></nobr>:P</p></htmltext>
<tokenext>That 's a pretty long-winded .
Why did n't you just say " ...theories remain : either the gas is created as a by-product of reactions between volcanic rock and water " .
Oh , right , the clip and story already did .
: P</tokentext>
<sentencetext>That's a pretty long-winded.
Why didn't you just say "...theories remain: either the gas is created as a by-product of reactions between volcanic rock and water".
Oh, right, the clip and story already did.
:P</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370710</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30388314</id>
	<title>Re:crap</title>
	<author>tehcyder</author>
	<datestamp>1260461880000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><blockquote><div><p>Now the <strong>ecozealots</strong> will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.</p></div>
</blockquote><p>
I thought that the accepted term amongst deluded ultra right wing nutjobs was "econazis"?</p></div>
	</htmltext>
<tokenext>Now the ecozealots will decry our spoiling of the natural martial environment , and will protest any attempt at colonization or terraformation as the destruction of a precious natural world .
I thought that the accepted term amongst deluded ultra right wing nutjobs was " econazis " ?</tokentext>
<sentencetext>Now the ecozealots will decry our spoiling of the natural martial environment, and will protest any attempt at colonization or terraformation as the destruction of a precious natural world.
I thought that the accepted term amongst deluded ultra right wing nutjobs was "econazis"?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370138</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30374444</id>
	<title>Re:Even more compelling</title>
	<author>mmjb</author>
	<datestamp>1260298200000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Sounds like a lot of hot air to me...</p></htmltext>
<tokenext>Sounds like a lot of hot air to me.. .</tokentext>
<sentencetext>Sounds like a lot of hot air to me...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370116</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370414</id>
	<title>Lifeforms - Food?</title>
	<author>dgr73</author>
	<datestamp>1260267180000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I bet Adam Richman is already eyeing the place with a challenge in mind.</htmltext>
<tokenext>I bet Adam Richman is already eyeing the place with a challenge in mind .</tokentext>
<sentencetext>I bet Adam Richman is already eyeing the place with a challenge in mind.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370592</id>
	<title>Does make you wonder...</title>
	<author>Anonymous</author>
	<datestamp>1260268200000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Would they be looking at earth through telescopes of a kind unknown (and unrecognisable) to us thinking "yeah, that might be a nice planet to colonize, but it's so hot and the atmosphere is full with volatile oxygen, can't imagine anything surviving there."?</p></htmltext>
<tokenext>Would they be looking at earth through telescopes of a kind unknown ( and unrecognisable ) to us thinking " yeah , that might be a nice planet to colonize , but it 's so hot and the atmosphere is full with volatile oxygen , ca n't imagine anything surviving there .
" ?</tokentext>
<sentencetext>Would they be looking at earth through telescopes of a kind unknown (and unrecognisable) to us thinking "yeah, that might be a nice planet to colonize, but it's so hot and the atmosphere is full with volatile oxygen, can't imagine anything surviving there.
"?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370962</id>
	<title>Re:Even more compelling</title>
	<author>Anonymous</author>
	<datestamp>1260269820000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I'm not sure which country that you live in, but where I live, the press and the scientists aren't controlled by the government.</p></htmltext>
<tokenext>I 'm not sure which country that you live in , but where I live , the press and the scientists are n't controlled by the government .</tokentext>
<sentencetext>I'm not sure which country that you live in, but where I live, the press and the scientists aren't controlled by the government.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370562</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370404</id>
	<title>"The Doctor" Told me....</title>
	<author>jameskojiro</author>
	<datestamp>1260267120000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>0</modscore>
	<htmltext><p>You can go to Mars, but don't drink the water, because water always wins.....</p><p>I wonder if you breathed in Martian Methane if you would become a fart monster who wanted to invade Titan or something.......</p></htmltext>
<tokenext>You can go to Mars , but do n't drink the water , because water always wins.....I wonder if you breathed in Martian Methane if you would become a fart monster who wanted to invade Titan or something...... .</tokentext>
<sentencetext>You can go to Mars, but don't drink the water, because water always wins.....I wonder if you breathed in Martian Methane if you would become a fart monster who wanted to invade Titan or something.......</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372078</id>
	<title>Re:Even more compelling</title>
	<author>hairyfeet</author>
	<datestamp>1260275760000</datestamp>
	<modclass>Offtopic</modclass>
	<modscore>0</modscore>
	<htmltext><p>"A <em>person</em> is smart. People are dumb panicky dangerous animals and you know it" to quote MiB, and sadly it is true, just look at what happened around the original War of the Worlds broadcast. You are also assuming you know WHAT they are hiding, which may or may not be a thousand times worse than you imagine.</p><p> Can you even picture the total carnage in the streets is they announced " To the peoples of the Jewish, Muslim, and Christian faiths: Do you remember all those stories in the old books about "angels"? Yeah...get your butt out here Freddizzk.../drags out little alien guy/ This is Freddizzk, or Fred as we call him. Now tell them you are sorry for using your technology to fuck with their religions for a frat prank."</p><p>

Considering how many religions have stories of "lights in the sky" "angels interacting with the peasants" etc, along with what we have learned from observing <a href="http://en.wikipedia.org/wiki/Cargo\_cult" title="wikipedia.org">Cargo Cults</a> [wikipedia.org] I'm sure if the government found out aliens had been here in the past they would keep their mouths shut for fear of starting religious riots or worse. Anything smarter than bacteria is just not something John Q Public is ready to face ATM.</p></div>
	</htmltext>
<tokenext>" A person is smart .
People are dumb panicky dangerous animals and you know it " to quote MiB , and sadly it is true , just look at what happened around the original War of the Worlds broadcast .
You are also assuming you know WHAT they are hiding , which may or may not be a thousand times worse than you imagine .
Can you even picture the total carnage in the streets is they announced " To the peoples of the Jewish , Muslim , and Christian faiths : Do you remember all those stories in the old books about " angels " ?
Yeah...get your butt out here Freddizzk.../drags out little alien guy/ This is Freddizzk , or Fred as we call him .
Now tell them you are sorry for using your technology to fuck with their religions for a frat prank .
" Considering how many religions have stories of " lights in the sky " " angels interacting with the peasants " etc , along with what we have learned from observing Cargo Cults [ wikipedia.org ] I 'm sure if the government found out aliens had been here in the past they would keep their mouths shut for fear of starting religious riots or worse .
Anything smarter than bacteria is just not something John Q Public is ready to face ATM .</tokentext>
<sentencetext>"A person is smart.
People are dumb panicky dangerous animals and you know it" to quote MiB, and sadly it is true, just look at what happened around the original War of the Worlds broadcast.
You are also assuming you know WHAT they are hiding, which may or may not be a thousand times worse than you imagine.
Can you even picture the total carnage in the streets is they announced " To the peoples of the Jewish, Muslim, and Christian faiths: Do you remember all those stories in the old books about "angels"?
Yeah...get your butt out here Freddizzk.../drags out little alien guy/ This is Freddizzk, or Fred as we call him.
Now tell them you are sorry for using your technology to fuck with their religions for a frat prank.
"

Considering how many religions have stories of "lights in the sky" "angels interacting with the peasants" etc, along with what we have learned from observing Cargo Cults [wikipedia.org] I'm sure if the government found out aliens had been here in the past they would keep their mouths shut for fear of starting religious riots or worse.
Anything smarter than bacteria is just not something John Q Public is ready to face ATM.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370562</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370790</id>
	<title>Re:I do hope...</title>
	<author>jellomizer</author>
	<datestamp>1260269100000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Well perhaps... Perhaps Life is still unique in the universe.  However some bacteria which came from mars went in spore form to earth and found it was a good place to grow, or the other way around.  We could find life within our solar system.  But that is it.</p></htmltext>
<tokenext>Well perhaps... Perhaps Life is still unique in the universe .
However some bacteria which came from mars went in spore form to earth and found it was a good place to grow , or the other way around .
We could find life within our solar system .
But that is it .</tokentext>
<sentencetext>Well perhaps... Perhaps Life is still unique in the universe.
However some bacteria which came from mars went in spore form to earth and found it was a good place to grow, or the other way around.
We could find life within our solar system.
But that is it.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370148</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30374582</id>
	<title>Re:I do hope...</title>
	<author>xmundt</author>
	<datestamp>1260300000000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>It's not just religious people who attempt to <a href="http://www.amazon.com/Rare-Earth-Complex-Uncommon-Universe/dp/0387952896/ref=sr\_1\_4?ie=UTF8&amp;s=books&amp;qid=1260306430&amp;sr=8-4" title="amazon.com">rationalize</a> [amazon.com] the fact Earth may be the only place with intelligent life.</p></div><p>      what proof is there that there IS intelligent life on Earth?   Considering some of the amazingly short-sighted and silly actions taken in the world, and, the general contempt for education that is so prevalent in the USA, I would argue that it is time we removed the beam from our own eye, before we attempt to remove the mote from our brother's eye.   We likely need to start acting a LOT more intelligent before any other possible intelligence in the Universe would be interested in contacting us.<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pleasant dreams<br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dave mundt</p></div>
	</htmltext>
<tokenext>It 's not just religious people who attempt to rationalize [ amazon.com ] the fact Earth may be the only place with intelligent life .
what proof is there that there IS intelligent life on Earth ?
Considering some of the amazingly short-sighted and silly actions taken in the world , and , the general contempt for education that is so prevalent in the USA , I would argue that it is time we removed the beam from our own eye , before we attempt to remove the mote from our brother 's eye .
We likely need to start acting a LOT more intelligent before any other possible intelligence in the Universe would be interested in contacting us .
          pleasant dreams           dave mundt</tokentext>
<sentencetext>It's not just religious people who attempt to rationalize [amazon.com] the fact Earth may be the only place with intelligent life.
what proof is there that there IS intelligent life on Earth?
Considering some of the amazingly short-sighted and silly actions taken in the world, and, the general contempt for education that is so prevalent in the USA, I would argue that it is time we removed the beam from our own eye, before we attempt to remove the mote from our brother's eye.
We likely need to start acting a LOT more intelligent before any other possible intelligence in the Universe would be interested in contacting us.
          pleasant dreams
          dave mundt
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370332</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30375594</id>
	<title>Re:crap</title>
	<author>robertinventor</author>
	<datestamp>1259581560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Yes I agree. It is something I am quite passionate about.<br> <br>

If people travel to the surface of mars, then they are bound to introduce earth micro-organisems - plant or animal, as soon as they or their spaceship sets foot on the planet - look at how the spacecraft have to be sterilised at present.<br> <br>


There probably has been some transfer of life between the planets through meteor impacts, but rare and only of a few organisms.<br> <br>


This will introduce a whole new biota. It's like introducing organisms from one continent to another on the earth, but far worse. Although conditions on Mars surface are harsh, it seems quite possible that a few organisms will survive, maybe by getting into the ground below the surface so shielded from the sun and the reactive chemicals on the surface of the planet.<br> <br>


If there is any life in Mars, maybe in deep underground aquifers, it is very liikely that it will become extinct as a result of the earth lifeforms invading the planet.<br> <br>


Even if there is no life on Mars, this is like a big uncontrolled experiment in terraforming. Who knows what plant or animal life may evolve from it and spread to cover the entire planet?<br> <br>

Newly evolved Mars organisms may be viruses, fungi, and other disease organisms hazardous to human life and prevent future colonisation of the planet. After all the life would be evolved mainly from micro-organisms that live on human beings. So they may become dangerous to earth life, so that Mars can no longer be visited because of the risk of returning the newly evolved Mars organisms to Earth..<br> <br>

Newly evolved Mars organisms could also release gases and transform the Mars atmosphere in ways that we don't want to happen. They are bound to transform the soil and atmosphere in some way or another if they spread and are prolific.<br> <br>


Or they could be totally benign, improve the soil and atmosphere, evolve in ways that are beneficial to us and to the planet, and produce useful products, even fruit and vegetables etc. But in our present so very limited state of knowledge of terraforming, this isn't the moment to begin an uncontrolled and unintended experiemnt in seeding Mars with a random sample of life from Earth.<br> <br>


Humans can explore Mars robotically as we do at present with great care to sterilise our explorers.<br> <br>


There may be reasons for humans to orbit the planet by spacecraft too, with great care as a crash of a spacecraft with humans on board would be potentially a disaster. But if you orbitted above the planet and explored its moons Phobos and Deimos, you could maybe build a base on them and then explore Mars by telepresence with carefully sterilised vehicles.<br> <br>


Once you know for sure that there is no life on the planet - BUT HOW CAN YOU EVER BE CERTAIN - and also KNOW MUCH MORE ABOUT TERRAFORMING, you could carefully introduce a few selected micro-organisms to the planet perhaps. And establish a benign biota there BEFORE ANY HUMAN SO MUCH AS STEPS ON THE PLANET.<br> <br>


But there are also strong reasons for never terraforming the planet at all. If you do terraform it, then the gases are released. The gravity isn't enough to hold onto them. So within a few hundred thousand years, the gases are all gone. After that point, no future terraforming is possible again, except by heroic methods such as changing the orbits of millions of comets so that they hit Mars.<br> <br>


We - well our descendents - may need Mars later on - when the sun gets much hotter, and Earth is no longer habitable. It may be just the stepping stone we need in our outward migration towards Jupiter as the sun expands to a red giant. And maybe by then we will have the wisdom to be able to do it properly and responsibly. <br> <br>


So probably we should treat it as a preserve, and not terraform it until then, if at all wise.<br> <br>


There are plenty of other places to explore. The moon. The poles of mercury where there is believed to be ice, so could be made short term habitable to humans. Asteroids. Moons of ju</htmltext>
<tokenext>Yes I agree .
It is something I am quite passionate about .
If people travel to the surface of mars , then they are bound to introduce earth micro-organisems - plant or animal , as soon as they or their spaceship sets foot on the planet - look at how the spacecraft have to be sterilised at present .
There probably has been some transfer of life between the planets through meteor impacts , but rare and only of a few organisms .
This will introduce a whole new biota .
It 's like introducing organisms from one continent to another on the earth , but far worse .
Although conditions on Mars surface are harsh , it seems quite possible that a few organisms will survive , maybe by getting into the ground below the surface so shielded from the sun and the reactive chemicals on the surface of the planet .
If there is any life in Mars , maybe in deep underground aquifers , it is very liikely that it will become extinct as a result of the earth lifeforms invading the planet .
Even if there is no life on Mars , this is like a big uncontrolled experiment in terraforming .
Who knows what plant or animal life may evolve from it and spread to cover the entire planet ?
Newly evolved Mars organisms may be viruses , fungi , and other disease organisms hazardous to human life and prevent future colonisation of the planet .
After all the life would be evolved mainly from micro-organisms that live on human beings .
So they may become dangerous to earth life , so that Mars can no longer be visited because of the risk of returning the newly evolved Mars organisms to Earth. . Newly evolved Mars organisms could also release gases and transform the Mars atmosphere in ways that we do n't want to happen .
They are bound to transform the soil and atmosphere in some way or another if they spread and are prolific .
Or they could be totally benign , improve the soil and atmosphere , evolve in ways that are beneficial to us and to the planet , and produce useful products , even fruit and vegetables etc .
But in our present so very limited state of knowledge of terraforming , this is n't the moment to begin an uncontrolled and unintended experiemnt in seeding Mars with a random sample of life from Earth .
Humans can explore Mars robotically as we do at present with great care to sterilise our explorers .
There may be reasons for humans to orbit the planet by spacecraft too , with great care as a crash of a spacecraft with humans on board would be potentially a disaster .
But if you orbitted above the planet and explored its moons Phobos and Deimos , you could maybe build a base on them and then explore Mars by telepresence with carefully sterilised vehicles .
Once you know for sure that there is no life on the planet - BUT HOW CAN YOU EVER BE CERTAIN - and also KNOW MUCH MORE ABOUT TERRAFORMING , you could carefully introduce a few selected micro-organisms to the planet perhaps .
And establish a benign biota there BEFORE ANY HUMAN SO MUCH AS STEPS ON THE PLANET .
But there are also strong reasons for never terraforming the planet at all .
If you do terraform it , then the gases are released .
The gravity is n't enough to hold onto them .
So within a few hundred thousand years , the gases are all gone .
After that point , no future terraforming is possible again , except by heroic methods such as changing the orbits of millions of comets so that they hit Mars .
We - well our descendents - may need Mars later on - when the sun gets much hotter , and Earth is no longer habitable .
It may be just the stepping stone we need in our outward migration towards Jupiter as the sun expands to a red giant .
And maybe by then we will have the wisdom to be able to do it properly and responsibly .
So probably we should treat it as a preserve , and not terraform it until then , if at all wise .
There are plenty of other places to explore .
The moon .
The poles of mercury where there is believed to be ice , so could be made short term habitable to humans .
Asteroids. Moons of ju</tokentext>
<sentencetext>Yes I agree.
It is something I am quite passionate about.
If people travel to the surface of mars, then they are bound to introduce earth micro-organisems - plant or animal, as soon as they or their spaceship sets foot on the planet - look at how the spacecraft have to be sterilised at present.
There probably has been some transfer of life between the planets through meteor impacts, but rare and only of a few organisms.
This will introduce a whole new biota.
It's like introducing organisms from one continent to another on the earth, but far worse.
Although conditions on Mars surface are harsh, it seems quite possible that a few organisms will survive, maybe by getting into the ground below the surface so shielded from the sun and the reactive chemicals on the surface of the planet.
If there is any life in Mars, maybe in deep underground aquifers, it is very liikely that it will become extinct as a result of the earth lifeforms invading the planet.
Even if there is no life on Mars, this is like a big uncontrolled experiment in terraforming.
Who knows what plant or animal life may evolve from it and spread to cover the entire planet?
Newly evolved Mars organisms may be viruses, fungi, and other disease organisms hazardous to human life and prevent future colonisation of the planet.
After all the life would be evolved mainly from micro-organisms that live on human beings.
So they may become dangerous to earth life, so that Mars can no longer be visited because of the risk of returning the newly evolved Mars organisms to Earth.. 

Newly evolved Mars organisms could also release gases and transform the Mars atmosphere in ways that we don't want to happen.
They are bound to transform the soil and atmosphere in some way or another if they spread and are prolific.
Or they could be totally benign, improve the soil and atmosphere, evolve in ways that are beneficial to us and to the planet, and produce useful products, even fruit and vegetables etc.
But in our present so very limited state of knowledge of terraforming, this isn't the moment to begin an uncontrolled and unintended experiemnt in seeding Mars with a random sample of life from Earth.
Humans can explore Mars robotically as we do at present with great care to sterilise our explorers.
There may be reasons for humans to orbit the planet by spacecraft too, with great care as a crash of a spacecraft with humans on board would be potentially a disaster.
But if you orbitted above the planet and explored its moons Phobos and Deimos, you could maybe build a base on them and then explore Mars by telepresence with carefully sterilised vehicles.
Once you know for sure that there is no life on the planet - BUT HOW CAN YOU EVER BE CERTAIN - and also KNOW MUCH MORE ABOUT TERRAFORMING, you could carefully introduce a few selected micro-organisms to the planet perhaps.
And establish a benign biota there BEFORE ANY HUMAN SO MUCH AS STEPS ON THE PLANET.
But there are also strong reasons for never terraforming the planet at all.
If you do terraform it, then the gases are released.
The gravity isn't enough to hold onto them.
So within a few hundred thousand years, the gases are all gone.
After that point, no future terraforming is possible again, except by heroic methods such as changing the orbits of millions of comets so that they hit Mars.
We - well our descendents - may need Mars later on - when the sun gets much hotter, and Earth is no longer habitable.
It may be just the stepping stone we need in our outward migration towards Jupiter as the sun expands to a red giant.
And maybe by then we will have the wisdom to be able to do it properly and responsibly.
So probably we should treat it as a preserve, and not terraform it until then, if at all wise.
There are plenty of other places to explore.
The moon.
The poles of mercury where there is believed to be ice, so could be made short term habitable to humans.
Asteroids. Moons of ju</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371030</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370198</id>
	<title>Quick!  We need some fundings!</title>
	<author>Anonymous</author>
	<datestamp>1260266340000</datestamp>
	<modclass>Funny</modclass>
	<modscore>3</modscore>
	<htmltext>This spells disaster in the form of global climate change on mars!  Who wants to be the first to martian up and buy some methane offsets?</htmltext>
<tokenext>This spells disaster in the form of global climate change on mars !
Who wants to be the first to martian up and buy some methane offsets ?</tokentext>
<sentencetext>This spells disaster in the form of global climate change on mars!
Who wants to be the first to martian up and buy some methane offsets?</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370160</id>
	<title>Questions:</title>
	<author>Penguinisto</author>
	<datestamp>1260266160000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>...that would have to be a lot of life, no? Or would the gas have been created by long-dead/extinct lifeforms, and the gas is just that stable in the atmosphere?</p><p>Also, titan is almost literally drowned in Methane (as in, lakes and oceans of the stuff). There ain't that many meteors floating around for that volume, and there's no volcanic activity to speak of, IIRC.</p></htmltext>
<tokenext>...that would have to be a lot of life , no ?
Or would the gas have been created by long-dead/extinct lifeforms , and the gas is just that stable in the atmosphere ? Also , titan is almost literally drowned in Methane ( as in , lakes and oceans of the stuff ) .
There ai n't that many meteors floating around for that volume , and there 's no volcanic activity to speak of , IIRC .</tokentext>
<sentencetext>...that would have to be a lot of life, no?
Or would the gas have been created by long-dead/extinct lifeforms, and the gas is just that stable in the atmosphere?Also, titan is almost literally drowned in Methane (as in, lakes and oceans of the stuff).
There ain't that many meteors floating around for that volume, and there's no volcanic activity to speak of, IIRC.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370878</id>
	<title>The "lifeform in the gaps?"</title>
	<author>bledri</author>
	<datestamp>1260269520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Sounds a bit like the "God in the Gaps" line of reasoning.  Well, to be fair, "lifeform creates methane" is testable and all ready been shown true on Earth.  I guess I'm just cranky after debugging all night...</p><p> <i>Wow, I almost wrote "to be fair", imagine the flame fest that would have started.  What can I say, my fingers type the first word that matches phonically.</i> </p></htmltext>
<tokenext>Sounds a bit like the " God in the Gaps " line of reasoning .
Well , to be fair , " lifeform creates methane " is testable and all ready been shown true on Earth .
I guess I 'm just cranky after debugging all night... Wow , I almost wrote " to be fair " , imagine the flame fest that would have started .
What can I say , my fingers type the first word that matches phonically .</tokentext>
<sentencetext>Sounds a bit like the "God in the Gaps" line of reasoning.
Well, to be fair, "lifeform creates methane" is testable and all ready been shown true on Earth.
I guess I'm just cranky after debugging all night... Wow, I almost wrote "to be fair", imagine the flame fest that would have started.
What can I say, my fingers type the first word that matches phonically. </sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370250</id>
	<title>My Dog Live on Mars?</title>
	<author>sycodon</author>
	<datestamp>1260266580000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>It makes enough methane for the whole planet, that's for sure.</p></htmltext>
<tokenext>It makes enough methane for the whole planet , that 's for sure .</tokentext>
<sentencetext>It makes enough methane for the whole planet, that's for sure.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370610</id>
	<title>Re:Once again ...</title>
	<author>Anonymous</author>
	<datestamp>1260268260000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>There have been no live volcanoes on Mars for a couple billion years.  If methane concentrations are found around old extinct volcanoes it would have to be caused by something else.</p></htmltext>
<tokenext>There have been no live volcanoes on Mars for a couple billion years .
If methane concentrations are found around old extinct volcanoes it would have to be caused by something else .</tokentext>
<sentencetext>There have been no live volcanoes on Mars for a couple billion years.
If methane concentrations are found around old extinct volcanoes it would have to be caused by something else.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370206</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370728</id>
	<title>Re:Underground methane leaking?</title>
	<author>mycroft822</author>
	<datestamp>1260268800000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>4</modscore>
	<htmltext>There are recent studies showing it may be possible that some of our methane on Earth is being created by the high pressure/temp conditions in the earth's mantle, rather than exclusively by the decay of organic matter. A <a href="http://newenergyandfuel.com/http:/newenergyandfuel/com/2009/07/30/another-idea-on-where-the-oil-and-gas-came-from/" title="newenergyandfuel.com" rel="nofollow">written article</a> [newenergyandfuel.com] on this, or an <a href="http://www.sciencefriday.com/program/archives/200912043" title="sciencefriday.com" rel="nofollow">NPR segment</a> [sciencefriday.com] (about 1/3 of the way into the audio file).</htmltext>
<tokenext>There are recent studies showing it may be possible that some of our methane on Earth is being created by the high pressure/temp conditions in the earth 's mantle , rather than exclusively by the decay of organic matter .
A written article [ newenergyandfuel.com ] on this , or an NPR segment [ sciencefriday.com ] ( about 1/3 of the way into the audio file ) .</tokentext>
<sentencetext>There are recent studies showing it may be possible that some of our methane on Earth is being created by the high pressure/temp conditions in the earth's mantle, rather than exclusively by the decay of organic matter.
A written article [newenergyandfuel.com] on this, or an NPR segment [sciencefriday.com] (about 1/3 of the way into the audio file).</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370178</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370488</id>
	<title>Re:Once again ...</title>
	<author>biryokumaru</author>
	<datestamp>1260267600000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I'll just hafta go over there and test the methane levels around Olympus Mons to find out...</htmltext>
<tokenext>I 'll just hafta go over there and test the methane levels around Olympus Mons to find out.. .</tokentext>
<sentencetext>I'll just hafta go over there and test the methane levels around Olympus Mons to find out...</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370206</parent>
</comment>
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---http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371550
---http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30376520
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30370990
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372078
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372832
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--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30372920
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_08_1956204.30371386
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