Glaciers on the Red Planet

Planetary scientists report Mars may have more water ice than anyone thought, locked in glaciers buried beneath the surface. The glaciers may have been frozen for 200 million years and may have as much water as the Great Lakes of North America. The find, made using ground-penetrating radar from NASA's Mars Reconnaissance Orbiter spacecraft, may be a major boost for future human exploration. We've known Mars has ice beneath its soil, but the glaciers offer the possibility of tapping a huge store in one location rather than having to process large amounts of the Martian terrain for thinly spread ice.