Science Was Mars once cold and wet? Scientists see evidence of Mt. Sharp glaciers (+video)

The researchers, who saw evidence of glaciers in images taken by orbiters, say NASA's Mars rover Curiosity could provide on-the-ground tests of the hypothesis when it reaches Mt. Sharp.  

By , Staff writer

NASA/Handout via Reuters

Well before NASA's Mars rover Curiosity clocked its first Martian birthday this week, the robotic geologist uncovered strong evidence that liquid water – a key ingredient for organic life – once flowed across and pooled on the floor of Gale Crater, the rover's field site.