A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake ...

The Dragon Bravo Fire in Arizona has destroyed dozens of structures and a water treatment facility on the Grand Canyon's ...

The Grand Canyon is vast, covering 1,218,375 acres and 1,904 square miles across Arizona. Here's what to know.

A wildfire along the Grand Canyon’s North Rim grew rapidly over the weekend and destroyed a historic lodge and visitors ...

Grand Canyon National Park Superintendent Ed Keeble said the Grand Canyon Lodge, the only lodging at the North Rim, was ...

Democratic Gov. Katie Hobbs has toured the destruction left by a wildfire along the Grand Canyon’s North Rim. Hobbs surveyed what she called devastating damage Saturday. She has called ...

An upcoming episode of the PBS documentary series “Human Footprint” focuses on the Colorado River and premieres in Flagstaff ...

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico ...

Cutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...

A meteorite that struck near Winslow, Arizona, about 56,000 years ago may have triggered a massive landslide in the Grand ...