A recent Guardian survey of the world's leading climate scientists has found 80% believe warming above 1.5C is now unavoidable.

One of those is Professor Mark Howden, Director of the Institute for Climate, Energy & Disaster Solutions at The ANU and a lead IPCC author.

Professor Howden says that there is still a very narrow pathway in which we could reduce emissions and stay below 1.5c, but what we are seeing is emissions are still rising globally making it increasingly difficult to stay below 1.5c.

Listen to the discussion here on ABC RN Breakfast.