Watch: UN secretary-general warns 'humanity is on thin ice' when it comes to reversing effects of climate change

Watch: UN secretary-general warns 'humanity is on thin ice' when it comes to reversing effects of climate change

United Nations Secretary-General Antonio Guterres warns humanity is on thin ice, and that ice is melting fast when it comes to reversing the devastating and deadly effects of climate change around the world. Guterres released this video message ahead of a press conference to launch the Synthesis Report of the Intergovernmental Panel on Climate Change on Monday.