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One of Antarctica’s most rapidly melting glaciers has shed yet another large block of ice in an event that NASA scientists say is “further evidence of the ice shelf’s fragility.” The agency drew attention to the incident in a tweet Wednesday morning.

Pine Island Glacier, located on the edge of the increasingly unstable ice sheet of West Antarctica, is a top concern for climate scientists and one of the region’s biggest potential contributors to global sea level rise.

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The incident comes as the future of the agency’s climate research grows increasingly uncertain. Last November, just after President Trump was elected, one of his campaign advisers shocked the climate science community by suggesting that the new administration should curtail NASA climate research activities.

Continue reading:  A huge Antarctic glacier just lost another chunk of ice — and we know because of NASA