Narrow bands of ocean covering just over one-third of the world's seas are responsible for absorbing nearly three-quarters of ...

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

Marine microbes cooperate far more than they compete, reshaping how scientists understand ocean ecosystems and climate ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

Oceana scientist Caitlynn Birch explains how environmental DNA, or eDNA, helps us understand and protect the oceans ...

Evidence from fossil shells suggests that falling seawater calcium helped lock away carbon dioxide and helped cool Earth after the dinosaurs.