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How the Northern Lights Illuminate the Night Sky
science.howstuffworks.com/nature/climate-weather/atmospheric/question471.htm
How does the aurora borealis (the Northern Lights) work? What causes it? Why can you only see it in the North? Are the myths about it producing sound true?
How Gear Ratios Work
science.howstuffworks.com/transport/engines-equipment/gear-ratio.htm
You see gears in just about anything that has spinning parts - car engines, transmissions, electric toothbrushes... Learn what these gears are doing and get to the bottom of the "gear ratio" concept!
Types of Bears
animals.howstuffworks.com/mammals/types-of-bears.htm
The brown bear, the grizzly and the Kodiak bear are all of the brown bear species. Learn all about the brown bear at HowStuffWorks.
Science Projects for Kids: Weather and Seasons
Study the weather and seasons with innovative science projects for kids. Improve retention with these learning exercises, and have fun with your kids.
How to Choose the Right Bronzer
health.howstuffworks.com/skin-care/beauty/skin-and-makeup/choose-the-right-bronzer.htm
Want to know how to choose the right bronzer? Visit HowStuffWorks to learn how to choose the right bronzer.
How Fusion Propulsion Will Work
science.howstuffworks.com/fusion-propulsion.htm
Using current rocket engine technology, a trip to Mars takes seven months. Fusion propulsion would cut that trip in half. Find out what fusion is and how it could speed up space travel.
TLC Is Key for Your Middle Eastern or Asian Skin
health.howstuffworks.com/skin-care/information/skin-types/middle-eastern-or-asian-skin.htm
TLC is key for your middle eastern or Asian skin. Learn more about the keys for middle eastern or Asian skin from Discovery Health.
Should you put moisturizer or sunscreen on your face first?
If you have fair skin, it's smart to wear both sunscreen and moisturizer. But which do you put on first? Use this order to apply sunscreen and moisturizer
What If the Ozone Layer Disappeared?
science.howstuffworks.com/science-vs-myth/what-if/what-if-ozone-layer-disappeared.htm
It's a strange thing to think about, but have you ever wondered what would happen if the ozone layer suddenly wasn't there? Here's a hint: Getting a bad sunburn would be the least of your problems.
Is there a way to make my sunglasses scratch-resistant?
science.howstuffworks.com/question613.htm
I recently bought a pair of mirrored sunglasses and they are already scratched. Isn't there a way to make them scratch-resistant?