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Warming oceans cause Antarctic ice to melt. A new study provides the first real geological data on what happened to the West Antarctic Ice Sheet in previous warmer periods. The scientists conclude that this could lead to a sea level rise by about three metres. Dr Andy Hein from Edinburgh University is part of the team that studied sediments on peaks protruding through ice in the Ellsworth Mountains. (Photo: A researcher examines rocks in the West Antarctic landscape. © Andy Hein)
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