SCIENTISTS DISCOVER CLEAN WATER ICE JUST BELOW MARS’ SURFACE – WIRED

Fortunately, land erodes. Forget radar and drilling robots: Locate a spot of land laid bare by time, and you have a direct line of sight on Mars’ subterranean layers—and any ice deposited there.

Now, scientists have discovered such a site. In fact, with the help of HiRISE, a powerful camera aboard NASA’s Mars Reconnaissance Orbiter, they’ve found several.

via Scientists Discover Clean Water Ice Just Below Mars’ Surface