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 ...

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 bison died after it appeared to stumble into a hot spring at Yellowstone National Park last week while visitors looked on. The incident occurred during the early morning of June 21 at Grand ...

Bison, elk and other animals die in droves in Yellowstone's remote “animal boneyard.” Only a few know how to get there, ...

​​When most travelers think of America’s great national parks, names like Yosemite, Yellowstone, and the Grand Canyon ...