With water covering the majority of our planet, scientists have been wading through ideas to answer a fundamental question: Where did it all come from? A popular theory suggests asteroids or comets ...

A chemical element that’s not even in H 2 O — sulfur — is the reason Earth first got its water, a new study finds, bolstering a similar claim made a year ago. The discovery means our planet was born ...

Far below the oceans and continents we know, Earth’s deep mantle appears to have stored far more water in its early history than scientists once imagined. New experimental work on high‑pressure ...

With an abundant supply of liquid water, Earth is one of the few places in the universe where life can develop and flourish. But scientists have long wondered where exactly all of our life-giving ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers discovered that bridgmanite deep in the mantle can store far more water at high ...

Researchers have helped overturn the popular theory that water on Earth originated from asteroids bombarding its surface; Scientists have analyzed a meteorite analogous to the early Earth to ...

Early Earth got much of its water from relentless bombardment by water-rich asteroids and icy comets. Now, scientists say the young planet had a way to hold onto much more of that water than once ...