By Joe Phelan Yellowstone’s supervolcano last erupted 70,000 years ago. Will it erupt again anytime soon? Beneath Yellowstone National Park, a vast region of spectacular wilderness visited…
By Joe Phelan Yellowstone’s supervolcano last erupted 70,000 years ago. Will it erupt again anytime soon? Beneath Yellowstone National Park, a vast region of spectacular wilderness visited…