For roughly 2 billion years of Earth's early history, the atmosphere contained no oxygen, the essential ingredient required for complex life. Oxygen began building up during the period known as the ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers ...

Oxygen began entering Earth's oceans around 2.32 billion years ago, and shallow seas followed within a few million years.

The deep blue sea may not have always been so blue. A new study suggests that the Earth's oceans may have changed color over time and could change again in the future, depending on the chemical makeup ...

(NewsNation) — More than 20% of the Earth’s oceans have darkened over the last 20 years, potentially leaving some marine life in the dark, according to new research from the University of Plymouth.

Oceans around the globe have become darker over the last two decades, leaving researchers fearful for their marine inhabitants, according to a new study. Professor Thomas Davies of the University of ...

Astronomers have identified a massive cloud of water vapor surrounding a distant quasar, marking the largest single reservoir ...

For ages, Earth has been known as a blue planet, a vision largely shaped by the vast oceans that cover three-quarters of its surface. But what if this wasn't always the case, and our oceans used to be ...

Giant amphipod species Alicella gigantea, once thought to be very rare, is found to inhabit the majority of Earth's deep ...