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The Antarctic ice cap is the largest on Earth. But at the moment it contributes only about 10% of the sea level rise being driven by climate change as, despite warming, temperatures on the continent are still largely below freezing. Scientists have now concluded that a large part of the west Antarctic ice sheet is already doomed, because of the long-term effect of greenhouse gases already emitted into the atmosphere. Melting this part of the ice sheet would raise sea level by about four meters over the course of a few centuries. [Source: The Guardian]
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