For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

The "world's largest" time capsule was buried in 1975. Fifty years later, the contents of it were put on display in Seward, ...

Just a boat ride from Sicily, the island of Salina offers an authentic, laid-back Italian getaway with volcanic cliffs, lush landscapes, and extraordinary views.

PRF funded the "flying laboratory" Lockheed Electra 10E airplane through the Amelia Earhart Fund for Aeronautical Research.