When U.S. President Theodore Roosevelt declared over 800,000 acres of land in the Grand Canyon, Arizona, a national monument ...

Over 1,300 firefighters were involved in efforts to suppress two Arizona wildfires burning north of the Grand Canyon on ...

The White Sage Fire, burning in northern Arizona near the destructive Dragon Bravo Fire, continues to grow with evacuations ...

New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...