Greenland is a big island -- about the size of Saudi Arabia -- covered by ice and snow. But climate experts agree that frozen ground cover is melting at an accelerating pace, raising the sea level.
Greenland Icemelt
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Researchers moved around the 5,000 square kilometer research area by helicopter. (UCLA/Laurence C. Smith)
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Researchers were ferried by helicopter since conditions on the ground were so dangerous. (UCLA/ Laurence C. Smith)
