Climate warning to world leaders: stick to 2C limit or face 'mayhem'

This article is from the source 'guardian' and was first published or seen on September 20, 2014 23:48 (UTC). It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at http://www.theguardian.com/environment/2014/sep/21/un-limit-climate-rise-warning-nicholas-stern-barack-obama-david-cameron

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