Science has a funny way of humbling certainty. Most of us carry a mental picture of how Earth works that was assembled in school, reinforced by documentaries, and rarely questioned afterward. The ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known ...

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 ...

Earth Day promotes international awareness of environmental protection and earth conservation. It's the perfect opportunity to teach your child about essential concepts, such as going green and ...

You don't need a billion dollar space program to visit another world. You just need a plane ticket. Earth is hiding some ...

9. On Earth Day in 2011, people planted 28 million trees in Afghanistan as part of a "Plant Trees Not Bombs" campaign. 10. Since the first Earth Day, average annual temperatures in the contiguous ...