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Breaking the ice

Antarctic sea ice, which has actually seen some recent increases despite overall rising global temperatures.

Photo: NASA Earth Observatory

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Antarctic sea ice

This image shows Antarctic sea ice, which has actually seen some recent increases despite overall rising global temperatures. This fits with many climate-change models, which predict more rapid warming in the Arctic than in Antarctica. In addition to greater land coverage in the Northern Hemisphere than in the south, Antarctica is protected by the circumpolar current, which keeps warm tropical water from reaching it. The Arctic doesn't have that buffer, and is therefore quickly losing sea ice.