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It's big. It's cold. And it's melting into the world's ocean. It's Zachariae Isstrom, the latest in a string of Greenland glaciers to undergo rapid change in our warming world. A new study published finds that Zachariae Isstrom broke loose from a glaciologically stable position in 2012 and entered a phase of accelerated retreat. The consequences will be felt for decades to come. [Source: NASA Jet Propulsion Laboratory]
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