Similar to all U.S. national parks, Yellowstone has numerous signs warning visitors to not approach the wildlife. For species ...

“Yellowstone is a dynamic geologic system – the one constant is change.” So wrote Michael Poland, a geophysicist with the US ...

Yosemite’s iconic tunnel view unveils an unusually quiet snowy winter scene with banks piled high with snow and ice covering ...

Conservation efforts around Yellowstone National Park’s population of cougars are the subject of a new documentary, ...

The park’s “preferred alternative” would entail construction of a 5-mile stretch of highway that avoids much of the canyon ...