Now 103 people have died in Kerr County as a result of the floods. Dozens are still missing. Pres. Trump visited the scene.

Baby bison appear to have a blast chasing each other at Yellowstone National Park Lake Mead warning issued over "lethal temperatures" Take a first look at the new Harry Potter as HBO begins filming ...

A bison in Yellowstone National Park appeared to stumble into the scalding water of Grand Prismatic Spring, causing its death as tourists looked on during the park's busiest season.

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 ...

Yellowstone visitors watched in horror as a bison fell into the Grand Prismatic Spring, struggling to escape the boiling water in a tragic wildlife event.

Bison herd stops traffic as it crosses road in Yellowstone A bison died after it appeared to stumble into a hot spring at Yellowstone National Park last week while visitors looked on.

Mike Poland, who leads the Yellowstone Volcano Observatory for the U.S. Geological Survey, says these discoveries are helping scientists better understand how the whole system works.

If the Yellowstone supervolcano were to erupt — and there’s no indication that will happen any time soon — Billings residents could be up to their chins in ash.

Onlookers at one of Yellowstone National Park's most popular sites watched a large bison take its final steps into a scalding hot spring and die in a horrifying reminder of what can happen away ...

Photos show the bison struggling in the spring, thrashing and jumping into the air to try to get away from the boiling hot water.

After a thermal explosion at Biscuit Basin, the Yellowstone Volcano Observatory unveils a new safety plan to enhance monitoring and protect visitors in the park.