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Why Distant Mountains Appear Blue to the Naked Eye
science.howstuffworks.com/mountains-appear-blue.htm
Your eyes aren't playing tricks on you. Those mountains way off in the distance really do look blue, and it's because of how light wavelengths scatter in the atmosphere.
How to Dry Clean at Home
home.howstuffworks.com/home-dry-cleaning.htm
Is your wardrobe filled with fabrics like rayon, silk, and wool blends? Tired of those escalating professional dry cleaning bills? The answer may be as close as your clothes dryer. See how home dry cleaning works.
How are men's soaps different from others?
health.howstuffworks.com/wellness/men/hygiene/how-are-mens-soaps-different-from-others.htm
How are men's soaps different from others? Visit Discovery Health to learn how men's soaps are different from others.
Why Feeling Clean Feels So Good
health.howstuffworks.com/wellness/hygiene-tips/why-cleanliness-feel-so-good.htm
Human beings are hard-wired to function better in a clean environment. HowStuffWorks looks at why.
What's the Difference Between Covalent and Ionic Bonds?
science.howstuffworks.com/difference-covalent-ionic-bonds.htm
Covalent bonds form between two similar non-metals. Ionic bonds exist between metals and non-metals. HowStuffWoks explains ionic and covalent bonds.
How Hair Dye Turns Your Hair That Great Shade of Pink or Purple
Whether you want pink or silver or jet black hair, the BrainStuff team explains how hair dye works to give you your color of choice in this video.
How Perfume Works
science.howstuffworks.com/perfume.htm
Perfume is any substance that you wear and that smells. There are no requirements for it to smell good. Learn more about perfume at HowStuffWorks.
Understanding Sound Waves and How They Work
science.howstuffworks.com/sound-info.htm
When sound waves strike the ear, these waves produce the sensation of sound. Let's take a look at how sound waves work.
How Plastics Work
science.howstuffworks.com/plastic.htm
Plastics can be found in a wide variety of products. They are everywhere. Find out how plastics are made and learn about uses for plastics.
How Air Purifiers Work
home.howstuffworks.com/air-purifier.htm
Americans spend an estimated $250 million annually on air purifiers for their homes. Learn why people buy air purifiers and how they work.