BBC: The unrestricted use of fossil fuels should be phased out by 2100 if the world is to avoid dangerous climate change, a UN-backed expert panel says.
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.
If not, the world faces "severe, pervasive and irreversible" damage.
The UN said inaction would cost "much more" than taking the necessary action.
The IPCC's Synthesis Report...