Yellowstone is one of the best-monitored volcanic ... I have had people ask me, "What would a hypervolcano or a megavolcano be?"' 'I think it's misleading, because it implies that these volcanoes ...

Scientists are tracking changes at the giant supervolcano that lies under Yellowstone National Park, but they say there's no need to worry at the moment. “The western part of the Yellowstone ...