Which country is the world leader in wind energy? Is it always a good idea to turn off the lights when you leave a room? The truth about these and other energy facts may surprise you.

Is Earth perfectly round? Where is the driest place on Earth? There's a lot to know about our home planet.

Where is most of Earth's water? Is most of the fresh water in ice? It turns out water is pretty interesting.

Do big cities have ecosystems? What does it take to survive in the desert? Earth is full of different ecosystems.

How does air help and protect us? What's living in the air? Get the answers to these questions and more!