The NWS warning was in effect for regions of the Grand Canyon below 4,000 feet elevation. Temperatures were forecast to ...

Here's what's open and closed at Grand Canyon North Rim, South Rim and Phantom Ranch in the wake of wildfires that destroyed the North Rim lodge.

A South Rim mayor is clearing up confusion for tourists who believe the entire Grand Canyon National Park is closed due to ...

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

The formation of the Grand Canyon may be tied to a meteor strike that created another astonishing Arizona feature hundreds of ...

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