That giant rectangular iceberg that freaked out so many people a couple of weeks ago wasn’t the only unusually sharp-angled slab of ice NASA photographed that day. The Operation IceBridge flight on ...

A 460-mile-long stretch of canyon was discovered underneath Greenland's ice sheet by NASA's Operation IceBridge. It runs from the center of the island to the fjord of the Petermann Glacier. NASA's God ...