Learn how the Grand Canyon used to be home to an ancient evolutionary competition that has since left behind a plethora of ...

A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the ...

Paleontologists named the worm Kraytdraco spectatus, for its resemblance to a Star Wars monster. They say it sheds light on ...

As of July 22, firefighters expanded containment efforts for both of the wildfires that scorched over 70,000 acres in far ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

Highway closures and evacuations remain in effect as a wildfire burns more than 58,000 acres in Coconino County. It is one of ...

Roadless forests in Utah are far more valuable for fish and wildlife habitat and recreation than for timber production.

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.

The U.S. Bureau of Reclamation should start planning to modify the Glen Canyon Dam, which plugs the Colorado to form Lake ...

Businesses that are fueled by tourist dollars now fear they will lose money with two wildfires burning near the Grand Canyon.

A vegetation fire jumped the 71 Freeway in Chino Hills — prompting its closure on both sides at Euclid Avenue. As of 2:45 p.m. Wednesday, July 23, the Euclid fire had burned 100 to 150 acres, ...