A new study calculates the long-term effects of reintroducing wolves to Yellowstone National Park in the 1990s, which ...

Protesters hung an upside-down American flag at Yosemite National Park over the weekend after the Trump administration's layoffs.

Where is the train station, and is its actual history as brutal as the one in Yellowstone, paved with blood and bodies? Let's ...

What if you only had a day or two, to spend in Yellowstone National Park? Where would you go? What would you photograph? If ...