Monday marks 108 years since the Grand Canyon was declared a National Monument. It's "the one great sight which every American should see," according to Theodore Roosevelt. As the only of the Seven ...

Scientists have spent over a century arguing about when the Colorado River first carved through the Colorado Plateau. A diverse set of geologic studies continues to strongly support a 5–6 Ma ...

The U.S. is home to 63 national parks, and each has scenic views, geographically diverse locations and distinct flora and fauna. One of the most well-known is Grand Canyon National Park. No matter if ...

Snaking through the wild heartlands of northern Arizona, the world's most dramatic canyon is grand in name and grand in nature. Carved over millions of years by the Colorado River and ancient ...

The Grand Canyon has long been held up as a textbook example of slow, steady erosion carving a young gorge into ancient rock. New research is now challenging that familiar storyline, suggesting the ...

Grand Canyon National Park is temporarily closing its in-park hotels and lodges. The closure is caused by a series of breaks in the Transcanyon Waterline, which supplies water to the park. Guests with ...

A waterline break has forced the Grand Canyon's South Rim to temporarily halt overnight lodging. The suspension of overnight stays begins Dec. 6 and will continue for the foreseeable future.

A fire near the Grand Canyon in Arizona has destroyed dozens of structures, including the historic Grand Canyon Lodge and a water treatment facility, which caused a chlorine gas leak that forced ...