It's possible to respect the environment and ourselves while enjoying the world’s first national park.

Yellowstone, Yosemite and the Grand Canyon will all be affected.

Pack long underwear, a wool sweater, a down jacket, and a wind- and waterproof outer layer (like a Gore-Tex jacket and pants) ...

National park rangers chased him through Yellowstone and Grand Teton back in June.

Foreign visitors without an annual pass will need to pay a surcharge of $100, in addition to existing fees, to enter popular ...

Yellowstone's treacherous trails, meandering hikes, and voracious wildlife leaves visitors with clothes spattered with mud ...

A new bridge spanning the Yellowstone River just opened to cars and pedestrians.

Visitation fees for international visitors to Yellowstone and Glacier national parks are slated to increase substantially in ...

A $100-per-person charge for foreigners entering Yellowstone, Grand Canyon and other popular national parks is stoking ...

The fee change for international visitors will impact 11 national parks, including the Grand Canyon, Yellowstone and Yosemite ...

The percentage of international tourists to the world’s first national park has dropped by half over six years, raising ...

Small Yellowstone quakes changed deep groundwater chemistry and boosted hidden microbes. The study shows how shaking can ...