In Paris, delegates called on the UN’s Intergovernmental Panel
on Climate Change (IPCC) to report on the implications of a 1.5C target. They want the job done by 2018, in time to inform renewed talks on toughening emissions targets beyond those agreed upon in Paris.
But the truth is that scientists are only now getting out of the blocks to address what a 1.5C world would look like, because until recently it sounded like a political and technological impossibility. As a commentary published online in Nature Climate Change last week warned, there is “a paucity of scientific analysis” about the consequences of pursuing a 1.5C target.

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