North pole postcard: Earth

North pole postcard: Earth
North pole postcard: Earth Sunrise over sea ice near the North Pole. North polar sea ice has been diminishing every year, but this year has seen a sudden and dramatic shift in the behavior of north polar sea ice, with the polar cap failing to reform in the winter darkness. Learn more about this photo here, and more about this year's dramatically low sea ice here. NASA / James Yungel

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