> A supervolcano would destroy at most a few continents. Just for perspective, 70,000 years ago a supervolcano eruption in Indonesia with global effects nearly

> A supervolcano would destroy at most a few continents. Just for perspective, 70,000 years ago a supervolcano eruption in Indonesia with global effects nearly wiped out the human race (http://en.wikipedia.org/wiki/Toba_catastrophe_theory http://en.wikipedia.org/wiki/Toba_catastrophe_theory). On the basis of genetic diversity studies, it's estimated that all but somewhere between 3,000 to 10,000 people were killed. We may think ourselves immune from the consequences of a similar super-eruption today, but for most people in the world, people who aren't rich and who can't create a well-stocked underground shelter, the risk is very high.