The Arctic

The Arctic region of the Earth is defined roughly as the area above 66 degrees north latitude and is largely a vast ocean covered by sea-ice, though that ice is being affected by global warming. The Arctic also includes much of Greenland, which is covered by a massive ice sheet, as well as the frozen tundra of Europe, Asia and North America. It has distinctive plants and animals found only there, such as the polar bear and the Arctic fox. Read below for the latest news and research from and on the Arctic, its ice and the life it supports.
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New Lakes Discovered Under Greenland's Ice Hint at Warming
Greenland lake crater
January 21st, 2015
The discovery of two lakes hidden beneath the Greenland ice suggests that climate change cuts to the bottom of the ice sheet.
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How Greenland Got Its Glaciers
Greenland Mountains
January 8th, 2015
Greenland is famous for its massive glaciers, but the region was relatively free of ice until about 2.7 million years ago, according to a new study. Before then, the Northern Hemisphere had been mostly ice-free for more than 500 million years.
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Arctic Is Heating Up Twice as Quickly as Rest of World
A graph showing Arctic temperature increases
December 17th, 2014
Bad news for polar bears: the Arctic is still warming at twice the pace as the rest of the planet, according to a new federal report.
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Melting Glaciers Pose a Carbon Menace
Tibet glacier
January 21st, 2015
Melting glaciers pose another threat beyond sea level rise. They will dump massive amounts of organic carbon into the world's oceans, altering ecosystems.
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Fate of Earth’s Ice Comes Further Into Focus
Antarctica's Twaites Glacier, climate change, ice melt
December 29th, 2014
The melting of Earth's polar ice came into starker relief in 2014, with real implications for sea level rise.
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Greenland's Ice-Melt Models May Be Too Sunny
Jakobshavn ice bergs
December 16th, 2014
The vast ice sheet covering Greenland could melt more quickly in the future than existing models predict, new research suggests.
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'Dark Ice' Speeds Up Melting in Greenland (Photos)
"Dark ice" on the right side of the photo is rich with impurities like soot and dust.
November 9th, 2014
Researchers are studying the reflectivity of Greenland's dark ice and how climate change may contribute to the ice sheet melting.
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Will Warming Surge as Arctic Microbes Feast on Defrosting Carbon?
Eriophorum root, carbon, global warming
January 13th, 2015
Scientists are racing against climate change to determine the impact of thawing Arctic soils and the carbon released during that process.
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Greenland's Ice Loss Now Comes from Surface
Greenland Melt Ponds
December 22nd, 2014
Greenland's disappearing ice shifted gears in the past decade, switching from shrinking glaciers to surface melting, researchers reported at the American Geophysical Union's annual meeting.
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North Pole's Reindeer Population Plummets
reindeer, animal survival, breeding
December 9th, 2014
Inbreeding, poaching, a lack of herders and climate change are contributing to the iconic animal's decline.
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