The Independent [independent.co.uk] reports on an article in Nature [nature.com] (full article is paywalled) in which the effects of the actions to which governments committed themselves at December's Paris climate summit are predicted. The authors estimate "a median warming of 2.6–3.1 degrees Celsius by 2100" if those policies are followed; they say more drastic action will be needed if warming is to be kept to 2 degrees or less.