The unrestricted use of fossil fuels should be phased out by 2100 if the world is to avoid dangerous climate change. The Intergovernmental Panel on Climate Change says in a stark report that most of the world’s electricity can – and must – be produced from low-carbon sources by 2050. It is intended to inform politicians engaged in attempts to deliver a new global treaty on climate by the end of 2015.

 

 

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