As you know, the Earth is a watery place. But just how much water exists on, in, and above our planet? This picture shows the size of a sphere that […] ...

Some 72 percent of Earth is covered in water, but 97 percent of that is salty ocean water and not suitable for drinking.

This is one amazing visualization by the U.S. Geological Survey: a picture that gives you a perfect idea of how much water there is on Earth compared to the solid materials that form its main body ...

Alone among known planets, Earth has vast oceans on its surface and its landmasses are marked with lakes and extensive river ...

The above image shows how big a sphere would be compared to Earth if it were made of all the Earth's water. It would have a diameter of about 860 miles and a volume around 332,500,000 cubic miles.

Throughout Earth’s 4.37 billion year history, water has been a constant---and in constant flux. During some periods, it's covered the planet in glaciers.

New research from the University of Colorado, Boulder has been published that shows the Earth may have been completely covered in water 3.2 billion years ago.

Most of Earth’s water, according to a new study, may actually be locked in a reservoir 400 miles underground. That Earth, for much of its history, has been covered by water isn’t much of surprise.

Scientists say they've found compelling new evidence that the ancient Earth was an unbroken expanse of water, without a single continent.

Astronomers have discovered a new exoplanet orbiting a distant star that might constitute a “super-Earth” completely covered in water.

Somewhere out there amongst the countless stars in the cosmos, scientists think there may be a “Super-Earth” packed full with the basic building block of life: good ol’ H2O. Wednesday, a ...

Earth is covered with water, but how much is hiding in our planet's crust? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.