Researchers detect methane on Mars, possible sign of life

Hi,

Today read an article on PhysOrg: http://www.physorg.com/news1767.html

Quote: "A University of Michigan scientist is part of a European Space
Agency team that has detected methane gas on Mars, and the findings
will be published in the online Web journal Science Express today.
Sushil Atreya, professor and director of the Planetary Science
Laboratory in the College of Engineering says the detection of methane
is the clearest indicator of the possibility of life on the Red Planet
yet."

Methane is a potential biomarker. On Earth, methane is almost entirely
derived from biological sources.