Kablooey!” That's the word U.S. Geological Survey volcanic experts used to describe a muddy eruption at Black Diamond Pool in ...

A big, messy surprise greeted Yellowstone National Park early Saturday morning, just as winter officially began. At around ...

Federal scientists are pushing back against viral claims that “mega eruptions” could strike within days, even as they quietly ...

Although the Yellowstone hotspot burned a swath of volcanic chaos across southern Idaho during the past 17 million years, it ...