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

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

Based on remarkably similar ages, the meteor impact that created one of Arizona's most recognizable landmarks and wood and sediments found in caves high up in the walls of the Grand Canyon, a new ...

Congressman Paul Gosar is demanding answers after a wildfire destroyed the Grand Canyon Lodge and more than 70 structures.

Is Arizona's most beautiful place an iconic red rock butte, a blue-green waterfall or an otherworldly cave formation? Vote in our stunning views poll.

Moment fast-moving wildfire destroys a historic Grand Canyon lodge and other structures as flames erupted in Arizona's Grand ...

The rash of global heat waves across the Northern Hemisphere comes as average global temperatures continue to climb, driven ...

Chicago heat wave, which took place 30 years ago this week, remains the Chicago area's deadliest weather disaster. Dorothy Tucker has a look back, and a look forward.

In general, Americans’ views of immigration policies have shifted dramatically in the last year, the Gallup polling shows — ...

But for Frisco, it was the stay at Grand Canyon Lodge, the North Rim’s near century-old accommodation, that made the biggest ...

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

The Grand Canyon Lodge, which burned in the Dragon Bravo Fire over the weekend of July 12-13, was on the North Rim of the ...