"Hydrofluorocarbons, commonly used in refrigerators and air conditioning systems, could add 0.5C to global temperatures by the end of the century".

"A loose coalition of more than 100 countries, including the US and European nations, is pushing for an early phase-out of hydrofluorocarbons (HFCs), a powerful greenhouse gas that if left unchecked is set to add a potentially disastrous 0.5C to global temperatures by the end of the century.

At a meeting in New York on Thursday, world leaders called for an 'ambitious phase-down schedule' for HFCs, which are commonly used in refrigerators and air conditioning systems, and pledged adaptation money for developing nations where HFC use is rapidly increasing.

'The growth in some HFCs is extraordinarily fast right now so it’s critical that we have an ambitious agreement,' a White House official told the Guardian. 'This is an extraordinarily important opportunity.'"

Oliver Milman reports for the Guardian September 22, 2016. [2]