Add Yahoo as a preferred source to see more of our stories on Google. Yellowstone averages between 1,500 and 2,500 earthquakes per year. In Yellowstone National Park, a bulge the size of 279 football ...

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 kid who lived in the very urban city of Philadelphia, I was convinced I ...

Might America’s most feared volcano actually be far less dangerous now than the headlines let on? For decades, Yellowstone has been portrayed as some sort of ticking geological time bomb, with its ...

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 ...

A muddy eruption at Black Diamond Pool in Yellowstone National Park has been captured on camera. The video was recorded by the Yellowstone Volcano Observatory webcam Saturday morning. They said the ...

Yellowstone’s volcanic heart is one of the largest magmatic systems on Earth, yet the park’s steaming vents and geysers are missing a gas that usually signals magma close to the surface. That absence, ...

The otherworldly landscapes of Yellowstone National Park have captured imaginations for centuries, with their bubbling mud pots, peculiar rainbow-colored pools, and dramatic geysers that shoot skyward ...

Echinus Geyser, the world’s largest acidic geyser, suddenly burst back to life in Yellowstone last month after being dormant for five years. Once called ...

The geyser is likely to fall back into dormancy soon, but there's a slim chance the spectacular eruptions will continue into ...

That's the word U.S. Geological Survey volcanic experts used to describe a muddy eruption at Black Diamond Pool in Yellowstone National Park on Saturday morning. Video shared by the USGS on social ...