When the Paris climate agreement was signed in 2015, almost all nations agreed to come together to limit global warming to below 2 degrees Celsius but, ideally, to keep it below 1.5 degrees.

On Monday, the Intergovernmental Panel on Climate Change (IPCC) released an exhaustively researched report on the effects of a 1.5° and 2° Celsius increase in global temperatures.

Conor Lennon from UN News has been listening to what the report’s authors had to say.