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

A hydrothermal explosion violently shook part of Yellowstone National Park's Biscuit Basin on Tuesday, damaging a boardwalk ...

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

International visitors will soon have to pay an added surcharge to visit Yellowstone, Yosemite and other iconic U.S. national ...

A troubling sign of the times: national park visitors being asked to report information that is "negative" about past or ...

Canyon Lodge is the largest National Park Service lodge in Yellowstone National Park, with more than 500 rooms and cabin ...

Huge boulders lay beside the road through Gibbon Canyon in Yellowstone National Park Tuesday morning after an all night ...