In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

Yellowstone National Park, known for its stunning landscapes and geothermal features, is sitting atop one of the most powerful supervolcanoes on Earth. The caldera, stretching 50 by 70 kilometers, ...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in ...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in ...

In what year was Yellowstone National Park established as the world's first national park? Test your knowledge of Yellowstone National Park! Attempt this GK quiz on its location, wildlife, and facts ...

The formation of Heart Mountain near Cody is a story of a block of rock the size of Rhode Island moving at 700 mph, an ...

It happened on Saturday morning, June 21, at the park’s Grand Prismatic Spring, Michael Poland, geophysicist with the U.S.

Learn more about the new hydrothermal feature that appeared last summer in Yellowstone National Park, and how, even though it ...

“The Yellowstone system is one that’s been stagnant for a long time.” The volcano’s largest eruption, which earned it the title of a supervolcano, occurred 2.1 million years ago.

Scientists sample water from the Firehole River in Yellowstone National Park. The work was done under National Park Service research permit 5194. (Courtesy of the Yellowstone Caldera Chronicles ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Blaine McCleskey, research ...

The most recent eruption at Yellowstone happened about 630,000 years ago. It was massive and left a giant crater known as a caldera.