A 42-year-old textile dealer in Bauchi, Adamu Yusuf, reached for his smartphone with anxiety and anticipation on a sweltering ...

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.

Researchers created 3D models of ancient tracks in Oregon’s John Day Fossil Beds National Monument. The study revealed a ...