There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our ...

How much do you remember about planet Earth in the news over the last 12 months? Take our quiz to find out! When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

You don’t have to travel far for this one — we’re diving into the incredible planet you’re standing on right now. Earth is the only known world teeming with life, wrapped in oceans, mountains, forests ...

Earth Day began in 1970 and takes place on April 22 every year. Here are 10 questions to test your knowledge of the planet. 1. A day on Earth is 24 hours but it always hasn’t been that way. Are the ...

1. Which two planets are closer to the sun than Earth? 2. The imaginary line through Earth joining the two poles is the -----. 3. By what name is a hole made by a meteor known? 4. What is the ...

Millions of asteroids are floating around in space. Find out what you know about these relics of our solar system. (Jungmin Ryu for The Washington Post) Warning: This ...

New AI features in Google Earth let users ask chatbot-style questions to find changes in the climate. The system could ...