Greenland's ice: beauty and threat

In this July 15, 2011 photo, a man walks past sleeping tents at Summit Station, a remote research site operated by the U.S. National Science Foundation, (NSF), situated 10,500 feet above sea level, on top of the Greenland ice sheet. Across Greenland's vast white landscape, teams of researchers from around the world are searching for clues to the potential effects of global warming on Greenland's ice. (AP Photo/Brennan Linsley)

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Greenland's Inuit people have countless terms in their language to describe ice in all its varieties. This gallery of photographs by AP's Brennan Linsley likewise is something of a visual vocabulary for the striking and beautiful forms ice takes on and around the giant Arctic island.

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