An ancient Martian system of canyons and valleys could be home to archaic life forms, a ground-breaking scientific paper has found. Scientists investigating the Red Planet’s mind-boggling cave system ...

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 ...

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 ...