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Artic ice retreat could cause iceless summers

The recent retreat of Arctic sea ice is likely to accelerate so rapidly that the Arctic Ocean could become nearly devoid of ice during summertime as early as 2040. The study, by a group of scientists from the National Centre for Atmospheric Research, the University of Washington and McGill University, USA, analysed the impact of greenhouse gas emissions on the Arctic. Scenarios run on supercomputers show the extent of sea ice each September could be reduced so abruptly that, within 20 years, it may begin retreating four times faster than any recorded times taken in the past.

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