Mysterious driftwood high in Grand Canyon caves hints at the legacy of Arizona’s huge impact crater.

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 ...

WINSLOW, AZ (AZFamily) — An asteroid hit the Earth in what is now known as northern Arizona about 50,000 years ago. It left a giant crater that draws people from all over the world. Nestled between ...

WASHINGTON and HOUSTON, July 15, 2025 /PRNewswire/ -- A new paper in Geology led by University of New Mexico Distinguished Professors Emeritus Karl Karlstrom and Laurie Crossey, University of Arizona ...

The ancient meteor impact that formed Arizona's Barringer Crater sent shock waves through the Grand Canyon — likely triggering a landslide that dammed the Colorado River, a new study suggests.

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 ...

In all likelihood, June 30, 1908, began as a normal morning in Siberia. At last, the frozen boreal woods had given way to the thaw of early summer. The dawn was interrupted when a light nearly as ...

I perched on the edge of disaster. Oddly enough, I wanted to laugh, perhaps in a strange effort to reduce the planet’s best ...