Rumors abound as animals are leaving Yellowstone National Park en masse. Is the Yellowstone supervolcano about to erupt?

Zion, Grand Canyon, Yellowstone, Yosemite, and Glacier are among the most popular U.S. national parks—here's how to get off the beaten path when visiting.

In a hot spring at Yellowstone National Park, a microbe does something that life shouldn’t be able to do: It breathes oxygen and sulfur at the same time.

We have to cross Long Lake on Day 5, a body of water that earned its name for a reason with 15 miles of big water and constant crosswinds. On Day 6, we grind through two more portages before getting ...

Less famous but just as unforgettable, these state parks showcase iconic landscapes without the long lines at America’s ...

They say you're always stronger in numbers, but this wolf pack learned the hard way that that's not always the case.

A mysterious blue water-filled hole appeared in Yellowstone's Norris Basin, caused by small explosions, but poses no ...

According to Yellowstone Park's safety rules, you should always stay at least 100 yards away from bears, wolves, and cougars ...