.@NASA_ICE sees two decades of changes to #Greenland's Helheim Glacier in unprecedented detail. https://t.co/CMEA5x0buL http://pic.twitter.com/14Dlkc9b4J
— NASA Earth (@NASAEarth) July 29, 2017
via Twitter https://twitter.com/NASAEarth
July 29, 2017 at 09:30PM
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