“The United Nation’s World Meteorological Organisation says 2010 was the warmest year on record .. confirming a significant long-term trend of global warming.  It says the trend also helped to melt Arctic sea ice cover to a record low for December last month.  Last year .. the global average temperature was 0.53 degrees Celsius above the 1961-to-1990 mean, which is used as a yardstick for climate measurements.  And sea ice around the northern polar region shrank to an average monthly extent of 12 million square kilometres…  That’s 1.35 million square kilometres below the 1979-to-2000 December average”

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