What would have happened if, in 1800, the Earth's ice caps had completely melted? What would the Earth look like and how would this have affected history? - Quora
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Polar bears are inbreeding due to melting sea ice, posing risk to survival of the species, scientists say - ABC News
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How much of the Earth's ice is melting? New and old techniques combine to paint a sobering picture | PNAS
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