Puts "climate change" into perspective, doesn't it ?
Meet the experts who monitor the behaviour of the Yellowstone supervolcano. They face the awesome responsibility of predicting when the next super-eruption might next take place -- and advising on what will happen when it does. A gigantic volcanic eruption shook the earth tens of thousands of years ago, blasting a cloud of volcanic ash 3,000 kilometers out, triggering a global winter. It was no normal eruption -- but rather a supereruption.