With 22 national parks and monuments to its name, Arizona boasts some of the most astonishing landscapes in the country, from the Grand Canyon to the towering buttes of Monument ...

In one of his first secretarial orders, Doug Burgum ordered staff to review public lands with an eye toward opening them to ...

WASHINGTON: The Grand Canyon in Arizona is one of Earth’s natural wonders, carved out over millions of years by ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized ...