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.

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.

A bison was gruesomely boiled to death in a Yellowstone National Park hot spring last week -- as tourists watched in horror.

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory.

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.

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.