Science Daily: Mars, Methane And Mysteries: Red Planet May Not Be As Dormant As Once Thought.
ScienceDaily (Aug. 13, 2009) — Mars may not be as dormant as scientists once thought.Stupid scientists always having to change their minds because their prejudices are always wrong.
The 2004 discovery of methane means that either there is life on Mars, or that volcanic activity continues to generate heat below the martian surface. ESA plans to find out which it is. Either outcome is big news for a planet once thought to be biologically and geologically inactive.Scientists suspect biology so I'm guessing it's volcanic.
Too bad all that methane and carbon dioxide can't cause global warming on Mars.