Two of Arizona's most famous landmarks may be linked by cosmic violence: the asteroid that gouged out Meteor Crater may have ...

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

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 ...

The Dragon Bravo Fire that destroyed the North Rim lodge will affect visitors and nearby communities. Here's the Canyon's financial impact on Arizona.

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

The flash flood struck Havasu Canyon, a tributary canyon, about 30 miles west of Grand Canyon Village, Arizona just before 1:30 p.m. on Thursday, USA TODAY reported.

The flash flood struck Havasu Canyon, a tributary canyon, about 30 miles west of Grand Canyon Village, Arizona just before 1:30 p.m. on Thursday, USA TODAY reported.

Within Rampart Cave in particular, where fossils were dated to between 19,000 and 24,000 years ago, the researchers discovered the remains of two individual cheetahs. One, a juvenile, died of ...