What To Worry About Next: Supervolcanoes

“A ‘supervolcano’ eruption is the most catastrophic natural disaster that can hit our planet, short of an asteroid impact — and now scientists believe they may build up a deadly head of steam far faster than we thought. Instead of the process taking hundreds of thousands of years, it could take just hundreds. The news could be bad for the US, where a supervolcano is said to be simmering beneath Yellowstone National Park. If it erupted, two thirds of the country could be rendered uninhabitable.”