mbone writes "Two independent groups are claiming the detection of methane in the Martian atmosphere, one using the Mars Express orbiter, and the other using ground based telescopes. This detection, if confirmed, would be of great significance for the search of life on Mars, as Methane will not last long in the Martian atmosphere and thus must be renewed, presumably either by biological processes or by volcanic vents, which would be a good place for life to develop. The leader of the ground based astronomy team, Michael Mumma of the Goddard Space Flight Center, when asked if the methane was biological in origin, said 'I think it is, myself personally.'"
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