Arizona is subject to a wide array of geologic hazards. That includes flooding, debris flows or mudslides, landslides, gradual land sinking (called subsidence) and earth fissures, swelling and ...

Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the most ...

WHITE CONES, resembling styrofoam, suspend from the ceiling. Knobby posts appear to have been artfully sculpted with hammer and chisel. A bumpy protrusion is engulfed in shiny goop, as if toffee had ...

We were on a long drive through the empty spaces of Arizona. There wasn’t a town for miles. No truck stops, no gas stations, not even a historical marker. Just an endless jumble of sun-baked mountains ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. FLAGSTAFF, Ariz. (AP) — In a story July 8 ...

Add this underground Arizona cave adventure to your summer bucket list for a unique day trip beneath the desert landscape.

Former Arizona Wildcats forward Sidi Gueye reportedly transferring to Santa Clara They walk in the same volcanic cinder fields where the U.S. Geological Survey intentionally blasted hundreds of ...

FLAGSTAFF, Ariz. — Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the ...

This undated photo provided by the U.S. Geological Survey Astrogeology Science Center shows Apollo 15 astronauts Jim Irwin, left, and Dave Scott driving a prototype of a lunar rover in a volcanic ...