Wildfires burning at or near the Grand Canyon's North Rim are still raging as strong winds, high heat and low humidity ...

Republic photographer Michael Chow captured the wildfire in a time-lapse video taken July 14 from the Canyon's South Rim. Chow set up his camera on a tripod, pointed it at the smoke, hoping it cleared ...

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

Fire activity on the North Rim of the Grand Canyon has forced the closure of several trails and campgrounds. Meanwhile, life ...

Arizona senators are demanding answers from the Department of the Interior about allowing an ongoing wildfire at Grand Canyon ...

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

The Dragon Bravo Fire burning inside Grand Canyon National Park has destroyed dozens of structures, including a beloved and historic lodge.

Admirers of the Grand Canyon's North Rim are hopeful The Grand Canyon Lodge, an elusive getaway for nearly a century, will be ...

W hen an asteroid made Meteor Crater in northern Arizona, it did more than leave the Earth’s best preserved impact crater.

Eight candidates will go before southern Arizona voters at the ballot box Tuesday in special congressional primaries to replace longtime Democratic U.S. Rep. Raúl Grijalva.

Millions of people across the United States have been issued safety warnings amid concerns over very high temperatures.