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 ...

Towering structures must be able to bend and sway when subjected to the forces of wind and ground movement, or they will ...

PETRIFIED FOREST – Adam Marsh and Michelle Stocker had been out all day in the hot weather, breaking rocks and sifting through the pieces, when they made a major discovery last May. “What we saw under ...

A view of the Stikine River near Wrangell and Petersburg. (Courtesy Cindi Lagoudakis) A geologist who has studied Southeast Alaska’s rocks and minerals for decades is creating a new geologic map of ...

FLAGSTAFF, Ariz. (AP) — In a story July 8 about northern Arizona’s role in astronaut training, The Associated Press reported erroneously the mission of one astronaut and the name of another. Charlie ...

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 ...

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 ...