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 treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the ...

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 ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

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 ...

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.