We tend to think of Earth as a well-documented planet. We've mapped its continents, sampled its oceans, drilled into its ...

About 71% of Earth’s surface is covered by water, and 96.5% of that water is found in the oceans.

A solar storm like the one that caused a nine-hour blackout across Quebec in 1989 could have even more dramatic effects if it ...

Millions of people around the world will pause Wednesday, at least for a moment, to mark Earth Day. It's an annual event founded by people who hoped to stir activism to clean up and preserve a planet ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. New research shows that rising sea levels caused by melting ice sheets ...

You may have heard a lot of online chatter about Earth's two moons recently, but that doesn't quite get the discovery right. Earth still only has one true natural satellite — our 2,159-mile-wide moon ...

Scientists have seemingly settled long-standing arguments about whether the components of Earth originated from the inner or ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...

Earth Day promotes international awareness of environmental protection and earth conservation. It's the perfect opportunity to teach your child about essential concepts, such as going green and ...

Amid the cold silence of the main belt, a giant rock drifts through space. It has existed for billions of years unchanged, but today, it will be irrevocably broken. Another rocky object hurtles toward ...