When you think of a Yellowstone eruption, you probably picture a massive, caldera-forming explosion. But new research is shifting that focus, revealing that the supervolcano's most recent known ...

Most tourists who visit Yellowstone National Park snap photos of Old Faithful and stroll past bubbling mud pots, never realizing they're walking on top of one of Earth's most powerful geological ...

A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park. Geologists call this type of bulge “volcanic uplift.” It’s often caused by ...