10 Things You Never Knew You Needed To Know.

1. Flight patterns around the world.

2. How WiFi spreads around a house

3. How Michael Jackson ACTUALLY did those moves in "Smooth Criminal."

4. How Big Bird works.

5. How a beanstalk grows.

6. What you actually look like putting sun screen on.

7. How a dog drinks water.

8. How camouflage helmets get their look.

9. How coins are sorted.

10. How factory-made pretzels are twisted.