NASA News: Mars Ancient Oceans Yield Clues to Possible Cradle of Life --"Undersea Hydrothermal Conditions May Have Existed 3.7 billion Years Ago" (WATCH Video)

"Even if we never find evidence that there's been life on Mars, this site can tell us about the type of environment where life may have begun on Earth," said Paul Niles of NASA's Johnson Space Center, Houston. "Volcanic activity...