About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction—the most extreme event of its kind in Earth's history ... looked remarkably alike all ...

"Discover the breathtaking beauty of our planet with Welcome to Planet Earth: A World of Wonders You ... and vibrant cultures from around the globe. Join us as we explore the natural marvels ...

Contributing Editor Korey Haynes has produced a stellar story, How we study our planet, exploring the way we use Earth-orbiting satellites to inform us about our home. The array of orbiting ...

Earth Day has been celebrated across the country for more than 50 years now, and the annual celebration is once again around the corner.

About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction—the most extreme event of its kind in ... all over the planet, from the equator ...