An ancient Martian system of canyons and valleys could be home to archaic life forms, a ground-breaking scientific paper has ...

Veryovkina Cave reveals more mysteries the deeper you go. Here’s everything that makes this cave a world of its own. Some of Earth’s most extreme frontiers lie beneath our feet, in places so ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV) light, ...

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...