There's no way that's true,' you might think, when someone presents you with an intriguing Milwaukee nugget. But these really are true.

Deep-sea mining in a remote part of the Pacific Ocean could harm ocean life including whales and dolphins, new research shows ...

Over 300 million years ago, Earth experienced powerful bursts of carbon dioxide from natural sources—like massive volcanic eruptions—that triggered dramatic drops in ocean oxygen levels. These ancient ...

Researchers say a significant lack of oxygen was found in parts of Mobile Bay. Known as hypoxia, it can impact marine life.