What's at the bottom of the Mariana Trench, and how do we know? How deep does the ocean go? We'll answer these questions and more in this deep dive into the world's oceans. Come on in: The water's ...

A team of Chinese scientists has developed a miniature 2.7-kilogram deep-sea robot to explore the deepest natural frontier on ...

two researchers explored the deepest point of Earth– the Mariana Trench in the Pacific Ocean. Their manned descent to the Challenger Deep, about 36,000 feet below the ocean, marked a significant ...