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 ...

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 ...

It's Earth Day, a day when people around the world celebrate the planet we call home. In honor of the occasion, here are some facts about Earth you may not know. Earth’s diameter, or the distance ...

Your every breath serves as a reminder that the atmosphere of Earth is silently carrying out its function. Since air is always present and invisible, it’s easy to take it for granted, but one of the ...

British broadcaster Sir David Attenborough has frolicked with gorillas, tracked ancient fish, introduced viewers to flying pterosaurs, and warned millions that the natural world is running out of time ...

1. Earth is not a perfect sphere. Yes, we've all been taught that the Earth is not flat, but it may shock you to learn that it's not perfectly spherical either. As the National Oceanic and Atmospheric ...

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 third rock from the Sun—and to this day, the only one with known ...