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Map showing Greenland's ice sheet

Huge hidden canyon under Greenland ice sheet may have flowing water

29 July 2019

A valley longer than the Grand Canyon hidden beneath the Greenland ice sheet may carry running water. How quickly it flows may affect how the ice melts
Person holding an umbrella in the sun

Today's global warming is unparalleled in the past 2000 years

24 July 2019

We now know that past periods when Earth cooled and warmed were only regional. The finding rebuffs the myth that today's planet-wide warming is a natural blip

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