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Why is Greenland covered in ice?

The ice on Greenland could only form due to processes in the deep Earth interior. Large-scale glaciations in the Arctic only began about 2.7 million years ago; before that, the northern hemisphere was largely free of ice ...

dateJan 05, 2015 in Earth Sciences
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The Greenland Ice Sheet: Now in HD

The Greenland Ice Sheet is ready for its close-up. The highest-resolution satellite images ever taken of that region are making their debut. And while each individual pixel represents only one moment in time, taken together ...

dateDec 18, 2014 in Earth Sciences
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