A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

Did anyone else grow up in perpetual fear of any and all natural disasters? I don’t know if it was cartoons or what, but as a ...

What does it mean when a landscape as apparently stable as that of Yellowstone starts just to measure it, not to look? In the ...

Located in the United States, one of the world's largest volcanoes is gearing up to explode. It's known as the Yellowstone Volcano, and it's not just any regular volcano. Instead, it's a supervolcano!

Yellowstone is a dynamic geologic system—the one constant is change. This is demonstrated daily by hydrothermal activity ...

Add Yahoo as a preferred source to see more of our stories on Google. Bison roaming the grasslands of Yellowstone National Park - John Boland/Shutterstock The otherworldly landscapes of Yellowstone ...

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal ...

"Yellowstone" came to a controversial end with its fifth season, and former star Kevin Costner has some ideas about how things should have wrapped up. Costner's John Dutton was killed off in the ...

CBS’ Yellowstone spinoff about Kayce Dutton has changed its show name months before the series premiere. Y: Marshals, which is scheduled to premiere on March 1, will now be known as just Marshals. The ...

Yellowstone is a land of superlatives. Even in such an environment, the Lower Geyser Basin stands out as one of the most ...