Human activities are the indisputable cause of climate change according to a new report.

The United Nation's (UN) Intergovernmental Panel on Climate Change (IPCC) is warning that if nothing changes global warming between 1.5 and two degrees will occur before the end of the century.

The Government has promised to publish a climate action plan very shortly.

Senator Pauline O’Reilly, member of the Climate Action Committee and Leader of the Greens in the Seanad, and John Gibbons, environmental commentator, joined The Last Word to discuss.

Catch the chat in full by pressing the play button on this page.