Sweet sweet Methane
So it looks like one of my predictions for 2009 (find life on another planet) might be coming true earlier than I would have imagined, or at least points towards a distinct possibility.
Methane is quickly destroyed in the Martian atmosphere in a variety of ways, so our discovery of substantial plumes of methane in the northern hemisphere of Mars in 2003 indicates some ongoing process is releasing the gas
Nasa Science is awesome!