The new Yellowstone fly-fishing season starts May 1 ahead of the usual Memorial Day weekend opening. The change affects three rivers: the Firehole, the Gibbon and the Madison.

Geologists discovered a new blue water spring at Yellowstone National Park that likely formed after a series of "mildly explosive events," the United States Geological Survey said. The hole is about ...

Since becoming America’s first national park in 1872, Yellowstone has drawn millions to its breathtaking geothermal landscape. Beneath its beauty, however, lie boiling pools capable of causing ...

Yellowstone National Park's Morning Glory Pool is not what it used to be. Back in the 1800s, the famous hot spring was a bright, clear, turquoise blue, and it was named after the flower it resembled.

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. The bison fell ...

A Colorado woman shared photos on social media of a bison's accidental drowning in a scalding hot spring at Yellowstone National Park. A Yellowstone scientist told national media outlets it's not ...