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Extracted from New York Times: Read the full article at http://www.nytimes.com/2007/09/21/science/21arctic.html?_r=1&ref=science&oref=slogin September 21, 2007Scientists Report Severe Retreat of Arctic Ice By ANDREW C. REVKINFAIRBANKS, Alaska, Sept. 20 — The cap of floating sea ice on the Arctic Ocean, which retreats under summer’s warmth, this year shrank more than one million square mil…