Shutterstock Ribbon Falls, Grand Canyon Few people know about the 8.4-mile trek down the North Kaibab Trail that leads to an ...

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a ...

Recently unearthed fossils from the Cambrian period shed light on a key stage of evolution, when life became much more ...

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

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.

What could possibly link a collision in space on the Arizona desert to a landslide that irreversibly altered the face of the ...

New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...

As the Turner Gulch Fire rages just outside of town, Gateway community members are concerned about the present and near future of the area they call home.

The South Rim Fire is burning, filling the air thick with smoke, triggering evacuations and encompassing more than 4,000 ...