Tiny plastic particles drifting through the oceans may be quietly weakening one of Earth’s most powerful climate defenses.

Part of Pine Island Glacier collapsed several years ago, forming an unstable inlet where no ship had sailed. Until now.

A group of German scientists tested the effects of a more acidic ocean on sharks’ teeth and found that future generations of ...

Brine pools, extremely salty, oxygen-free underwater lakes, are lethal to most marine life but teem with resilient microbes.

Far below the ocean’s surface, a hidden circulation system quietly shapes life on Earth. Dense “deep ocean water” formed in ...