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POPSAntarctica is breaking up, in a troubling sign of global warming
'The latest images, taken by Envisat's radar, say fractures have now opened up in this bridge and adjacent areas of the plate are disintegrating, creating large icebergs. The Antarctic peninsula -- the tongue of land that juts northward from the white continent towards South America -- has had one of the highest rates of warming anywhere in the world in recent decades. But this latest stage of the breakup occurred during the Southern Hemisphere's winter, when atmospheric temperatures are at their lowest. One idea is that warmer water from the Southern Ocean is reaching the underside of the ice shelf and thinning it rapidly from underneath. "Wilkins Ice Shelf is the most recent in a long, and growing, list of ice shelves on the Antarctic Peninsula that are responding to the rapid warming that has occurred in this area over the last fifty years," researcher David Vaughan of the British Antarctic Survey (BAS) said. "Current events are showing that we were being too conservati
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