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

The Grand Canyon, one of the most iconic geological formations on Earth, may hold deeper secrets about our planet’s history ...

Spanning three quarters of a mile and almost 600 feet deep, Meteor Crater was blasted by a nickel-iron meteorite roughly the ...

Christian Varady was watching the sky outside his Cantonment home when he saw a color-changing fireball fall into the ...

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