To Ringbauer’s surprise, people from Mediterranean outposts of Phoenician culture—also known as Punic people—shared no ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

International Boundary Monument 258 stands as a historic symbol at the border between the U.S. and Mexico, marking the birth of California's shape.