Yellowstone Supervolcano

Hidden 7 miles below Yellowstone, America’s most famous National Park, lies the world’s biggest natural threat: a Supervolcano.  A super eruption would kill millions, send a toxic cloud across the continent, and be the biggest threat to life on earth. But how likely is it to happen? And how would a modern-day eruption impact the world? In this explosive documentary, world leading scientists unpack the danger of this natural phenomenon.