Raja Ampat, an Indonesian archipelago, has long been a haven for scuba divers – but empty white-sand beaches and homestays ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds. Known as large low-seismic-velocity provinces (LLSVPs), these blobs are both hotter and ...

In the dusty, rust-colored expanse of Gale Crater on Mars, NASA’s Curiosity rover has uncovered a ghostly echo of a long-lost world. Etched into the rock are tiny undulations — ripples frozen in time, ...