What can we learn from the giant volcano under Yellowstone National Park?


I the massive supervolcano underneath Yellowstone National Park ever erupted, it could spew ash over most of the United States. Of course, the Yellowstone Caldera (as it is formally known) hasn’t erupted in about 70,000 years — and it only seems to erupt around every 700,000 years — so it seems unlikely that it will happen again anytime soon. All the same, researchers constantly study the underground volcano looking to understand its behavior. You know, just in case.