NEW YORK (GZERO MEDIA) - David Wallace-Wells, author of The Uninhabitable Earth: Life After Warming, talks to American foreign policy expert Ian Bremmer about global warming.

"2 degrees Celsius, which the UN calls the threshold of catastrophe and many island nations of the world call genocide - I think it's our best-case scenario," he said.

This video is made available to The Straits Times under a partnership with GZERO Media, a subsidiary of the Eurasia Group.