The age of discovery isn't over yet. A colossal canyon, the longest on Earth, has just been found under Greenland's ice sheet.
Greenland glaciers aren't just melting; they are falling apart, driven by warming ocean currents as well as warming air.
Environmental groups worry that Greenland's tiny population of Europeans and Inuits may end up on the losing side of that raw material diplomacy.
Lake sediments in western Greenland confirm that abrupt climate change brought cold conditions to the region just before the collapse of the Norse settlements in the Middle Ages.
July's record-breaking scorcher hit Greenland hard this month, melting 97 percent of the surface ice cover to some degree in just a few days.
Greenland and Antarctica are losing ice more rapidly every year and out pacing melt from glaciers.
A new study says coastal Greenland waters are warming faster than Antarctic waters -- but both ice sheets are melting faster than expected.
Soot from fires in the Arctic may be speeding up the melting of Greenland's ice sheet.
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