Raging fires, droughts, and superstorms like Sandy and Katrina are very visible impacts of climate change, but the damage to animals and plants flies under the radar. For UN environment chief Inger Andersen, that's because humans often take biodiversity for granted despite having messed up more than three-quarters of the planet's land and sea — and the consequences will be severe when nature stops behaving. "We have fragmented […] and converted so much land that nature is being squeezed into little corners." Watch her interview with Ian Bremmer on GZERO World.

Watch this episode of GZERO World with Ian Bremmer: Surviving a warming planet