One way to gauge the amount of ice in the Arctic is to…
ice
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Arctic ice melting
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Mapping ice layers with radar data
I don’t know exactly how much data NASA has in the bank, but…
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Estimated coastlines if the ice melted
National Geographic imagined new coastlines (and the cities that would go under) if…
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Extreme ice time-lapse
Glaciers are big, slow-moving objects, and it might seem that not much is…