Why heat is the biggest killer in climate change

It's a silent and effective killer and by far the most dangerous impact of climate change. Heat kills more people than drought or wildfires and it is only going to get worse says Jeff Goodell, contributing editor at Rolling Stone who has been writing about climate change for more than a decade. As many parts of the world swelter with record-breaking heat, Goodell writes about the risks we face as our planet gets hotter and hotter and what we need to do to cool off this deadly trend. His new is called Heat: Life and Death on a Scorched Planet.