We know more about the Moon’s surface than Earth’s ocean floor — but that’s changing fast. A NASA-supported team used a ...

But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...

Scientists have discovered evidence that Earth's oceans were once green, hinting that this could be a marker of early life, ...

The earliest lifeforms, cyanobacteria, appeared around 4 billion years ago. These organisms, now known as algae, were among the first to engage in oxygenic photosynthesis.

So how many oceans are there? Four, five... or one. All of the bodies of water on Earth that qualify as named oceans are directly connected to each other. Technically, they can all be considered ...

It's five times stronger than the Gulf Stream ... Atlantic and Indian oceans. The system regulates Earth's climate and pumps water, heat and nutrients around the globe. But fresh, cool water ...