Julie Brigham-Grette, Steve Petsch

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02 10 2020 | 08:48

The Arctic hasn’t been this warm for 3 million years – and that foreshadows big changes for the rest of the planet.

Every year, sea ice cover in the Arctic Ocean shrinks to a low point in mid-September. This year it measures just 1.44 million square miles (3.74 million square kilometers) – the second-lowest value …

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