The evidence continues to roll in for evidence of possible life on Mars.
The latest published reports by NASA mention high amounts of methane could be a possible sign of biological activity.
On Earth, methane usually comes from belching animals and rotting organic matter. (We must have a lot of methane in Idaho - I think in some counties there are more cows than people!)
Unfortunately, this just fuels my obsession with going to Mars even more!
I do hope in my lifetime we see Americans taking small leaps on the Red Planet.
(Photo courtesy of NASA)