One of the most closely studied and potentially dangerous supervolcanoes today is located in the United States: the Yellowstone Caldera ... pressure through its famous geysers and hot springs.

In response, Montana Fish, Wildlife and Parks closed 183 miles of the Yellowstone and all its tributaries to recreational ...

A new geyser recently popped up in Yellowstone National Park ... (that's more than half the world's geysers), including its most famous, Old Faithful, which erupts, on average, every 92 minutes.

A new thermal vent spewing steam in the air at Yellowstone National Park is gaining attention, mainly because it's visible from a road rather than any significant change in the park famous for its ...