Explainer: How volcanoes erupt
Some 640,000 years ago, a massive eruption rocked the land that, today, is Yellowstone National Park. The eruption spewed ash across much of the area that’s now the United States.…
Some 640,000 years ago, a massive eruption rocked the land that, today, is Yellowstone National Park. The eruption spewed ash across much of the area that’s now the United States.…