The Universe

Season 5, Episode 2

Episode Title: Mars: The New Evidence

Air Date: 2010-08-05

Overview:

A look for evidence of life on Mars which provides many clues that it now, or once had supported it; from the remains of lakes and rivers that once flowed on the surface; to the water ice frozen at the poles; to the seasonal changes in methane gases that may prove bacterial life still thrives underground.