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

Discover 25 surprising facts about Earth's continents and plates! Learn how our planet constantly shifts, from floating ...

Add Yahoo as a preferred source to see more of our stories on Google. Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The ...

Add Yahoo as a preferred source to see more of our stories on Google. This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most ...