What's on Mars? Evidence of water
NASA's Mars Curiosity rover identified what are believed to be rocks moved by water that once flowed on the Red Planet. Curiosity's further exploration is hoped to determine whether Mars was once inhabited by microorganisms.
http://www.csmonitor.com/Science/2012/0927/What-s-on-Mars-Evidence-of-water-video
NASA's Mars Curiosity rover identified what are believed to be rocks moved by water that once flowed on the Red Planet. Curiosity's further exploration is hoped to determine whether Mars was once inhabited by microorganisms.
http://www.csmonitor.com/Science/2012/0927/What-s-on-Mars-Evidence-of-water-video
