Bringing a novel approach to a classic problem, researchers have revealed how changes in ocean chemistry over the past 2 billion years have left an imprint on volcanic rocks formed in island arcs.

What lurks beneath the waves? State-of-the-art robots, ships, and submersibles are helping a new generation of explorers finally understand the most mysterious habitat on Earth. Sperm whales can hold ...

NASA's Curiosity rover has captured the first close-up images of a part of Mars that scientists say provide evidence of how water once flowed on the red planet. There were once rivers, lakes and ...

Beneath the vast expanse of the Indian Ocean, a strange phenomenon has puzzled scientists for decades—a massive gravitational ...