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Arctic sea ice, 2003. Satellite image of the minimum extent of sea ice around the North Pole in 2003. Global warming has greatly reduced the extent of sea ice in the Arctic. See image E205/090 for the situation in 1979, where the ice extended down much of eastern Greenland (centre right) and to the north coast of eastern Russia (centre left). Data collected by the Special Sensor Microwave Imager (SSMI) on a Defense Meterological Support Program (DMPS) satellite. (KEYSTONE/Science Photo Library/NASA) ======