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 ...

Vesta, an asteroid the size of Arizona, gets its own geologic map showing its history of meteorite impact craters over its billions of years of existence. Freelance writer Amanda C. Kooser covers ...

Eugene Shoemaker with some of the first geologic maps of the Moon, Flagstaff AZ, mid-1960's Many people are surprised when they learn that well before the first landing of Apollo in 1969, we already ...

Arizona’s Meteor Crater, a timeless scar from a cosmic collision 50,000 years ago, continues to unveil its mysteries, reshaping our understanding of Earth’s geological past. Recent studies underscore ...