This water, now over 4.5 billion years old, has been perpetually renewed through Earth's water cycle. My research team has ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Researchers say ...

Scientist have concluded water did not arrive as early during Earth's formation as previously thought, an insight that bears directly on the question of when life originated on the planet.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Water is at the center of one of the enduring questions about how ...

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 ...