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 ...

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

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

French artist James Colomina installed a red Trump sculpture with a rat in a New York City manhole.

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

GRAND CANYON NATIONAL PARK, AZ (AP/AZFamily) ― A historic lodge on the Grand Canyon’s North Rim is among more than 70 ...

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

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.

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

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