Big new reservoir of water ice suspected under Mars 13:54 16 March 2006 NewScientist.com news service Maggie McKee, Houston Mars Express, ESA MARSIS, ESA Thomas Watters, National Air and Space Museum A large and previously unknown reservoir of water ice may have been found below the surface of Mars, new radar observations suggest. Gaping canyons and river-like channels attest to the fact that large amounts of water once flowed on Mars. But today most of that water has disappeared, and finding out where it went is one of the main aims of research on the Red Planet. Scientists are using...