Nasa: Earth is warming at a pace 'unprecedented in 1,000 years' | the global temperature typically rose by between 4-7C over a period of 5,000 years as the world moved out of ice ages. The temperature rise clocked up over the past century is around 10 times faster than this previous rate of warming.

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Submitted August 30, 2016 at 10:27PM by maxwellhill http://ift.tt/2bzIPyU