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Rising temperatures in the Arctic are causing glaciers to retreat onto land, exposing thousands of kilometres of coastline in Greenland and other areas – with potential geopolitical consequences.

at the University of South Bohemia in the Czech Republic and his colleagues used satellite imagery taken in 2000 and 2020 to track changes in marine-terminating glaciers across the northern hemisphere. They found that almost 2500 kilometres of new coastline had emerged over this period due to glaciers retreating onto land, with two-thirds of this…