Move over Grand Canyon, because this hole in the ground was ranked the best roadside attraction in the nation. Here's why it ranked so high.

A peer-reviewed study published in the journal Geology proposes that the same asteroid strike that carved Arizona’s Meteor Crater roughly 50,000 years ago also triggered a massive landslide inside the ...

Arizona's Meteor Crater remains 'the perfect natural laboratory' for studying what happens when meteors strike Earth, scientists say.

Early in the morning of October 6, 2008, astronomers at the University of Arizona detected an asteroid on a collision course with Earth. When other sightings cropped up across the world, the ...

This piece is part of a special project on deep time examining what the Western U.S. was like thousands, millions and even billions of years ago, and how that history is still visible and ...

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico Distinguished Professors Emeritus Karl Karlstrom and Laurie Crossey, along with ...