Scientists belonging to the United Nation's (UN) Intergovernmental Panel on Climate Change (IPCC) have found there are unprecedented changes in the climate in every region of the world.
A new report from the IPCC highlights human carbon emissions as the main cause of climate change.
They are warning if nothing changes global warming of 1.5 to two degrees could occur by the end of this century.
Prof Peter Thorne, Climatologist and Coordinating Lead author of the IPCC report joined The Last Word to discuss.
Catch the chat in full by pressing the play button on this page.