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Arctic sea ice was at its lowest extent in January 2011 compared with any other time in the last 32 years, according to a new report by the U.S. National Snow and Ice Data Center (NSIDC).
Winter 2010-2011 in North America has been cold and snowy, but farther north, temperatures have been unusually warm.
NSIDC's Sea Ice News page discusses the January extent and conditions in detail.