During the Cold War, the U.S. built a nuclear-powered underground military facility under the ice. Archival video shows us how it was pulled off—and why it could never last.
Wagers, contests, and collaborations between the City of Brotherly Love and the City of Fountains are blowing up the internet once again. Museums, zoos, restaurants, libraries, animal shelters, and ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.