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Originally Posted by gary_580
they are saying there must be life.
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They haven't said that at all, I suggest you go back and read your article.
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What assumption is this based on?
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Its based on the fact that methane is made either from reactions that are associated with living organisms or volcanic activity. It doesn't take a top scientist to note that if there is no sign of any active volcano's then it is more than likely living cells that are making it.
I can't see the beef here, am I being stupid or something??
Edit - I must be out of practice, Altis beat me to it