In a state that contains the likes of the Grand Canyon and the Sedona red rocks, Meteor Crater is still one of Arizona’s ...

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 ...

When it comes to famous holes in the ground, northern Arizona has two: Grand Canyon and Barringer Meteorite Crater. New research now suggests that these famous depressions might, in fact, be ...

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 ...