Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park. A ...

A 26-year-old woman's final text message to her mom before she died after falling from a volcano while hiking has been revealed.

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

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

Researchers have found a link between two geological events in iconic locations of the U.S. Southwest that scientists ...

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

On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic wonder.

Grand Canyon Caverns and restaurant have opened after being closed for nearly 3 years. Here's why it closed and how to go into the Grand Canyon caves.