The planet is almost 25,000 miles around and 4.54 billion years old, and humans are still discovering some of the amazing ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

Millions of people around the world will pause Wednesday, at least for a moment, to mark Earth Day. It's an annual event ...

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

From the moon's formation to the Earth's core, some of the planet's biggest mysteries are still wide open Fascinating ...

Earth Day began as a protest in 1970, but its meaning has evolved. Here’s how it changed - and what it represents today.

How much do you know about our planet? Here are the amazing, odd and downright cool Earth facts scientists learned in the ...

Fresh takes on Apollo’s famous “Earthrise” and “Blue Marble” images showed off our planet’s beauty just weeks before Earth ...

In a year of grim climate and environment news, we’ve compiled several hopeful signs about our planet’s future.

Earth Day 2026 is the largest civic observance on the planet. Yet few organizations mark it. Here are four actions to take ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Illustration of the Earth-like exoplanet Proxima Centauri b orbiting the star Proxima ...