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How does an Indiglo watch work?
electronics.howstuffworks.com/gadgets/clocks-watches/question296.htm
When I push a button on my Indiglo watch, the entire face emits a green light. How does that work?
How does the respiratory system defend itself?
health.howstuffworks.com/human-body/systems/respiratory/respiratory-system-defend-itself.htm
How does the respiratory system defend itself? Visit HowStuffWorks to learn more about how the respiratory system defends itself from this article.
How Sword Making Works
science.howstuffworks.com/sword-making.htm
The centuries-old art of sword making involves incredibly intricate metal work, and it's still being practiced today. Get a rare glimpse into the creation of this ancient weaponry.
What Is Compost? How to Start Composting at Home
home.howstuffworks.com/composting.htm
Americans generate more than 200 million tons of trash each year. Want to put some of it to work? Try composting. It creates a natural fertilizer and can save valuable space in that landfill.
How Animated Tattoos Work
people.howstuffworks.com/animated-tattoo.htm
Learn about the hardware behind animated tattoos and how they are implanted into the body.
Skin Moisturizer Basics
health.howstuffworks.com/skin-care/moisturizing/products/skin-moisturizers.htm
Skin moisturizers come in many varieties. Visit HowStuffWorks to learn all about skin moisturizers.
How Often Are Septic Tanks Emptied, and Where Do the Contents Go?
home.howstuffworks.com/home-improvement/plumbing/septic-tank-cleaning.htm
A septic tank requires a good cleaning to flush out sludge and scum, which don't drain like effluent. Learn how a septic tank cleaning works.
How Tattoo Removal Works
health.howstuffworks.com/skin-care/beauty/skin-and-lifestyle/tattoo-removal.htm
About 50 percent of those who get tattoos later regret them. Find out laser tattoo removal techniques are helping people of all ages rid themselves of something that they no longer want on their bodies.
Baking Questions
recipes.howstuffworks.com/tools-and-techniques/baking-questions.htm
Baking involves precision and good measure, but that doesn't mean it has to be difficult. Find answers to simple baking questions in this article.
How Holographic Versatile Discs Work
electronics.howstuffworks.com/hvd.htm
Holographic memory systems offer more storage capacity and faster transfer rates than CDs and DVDs, but they've also been too expensive and complex to mass produce. Learn how the holographic versatile disc (HVD) has improved upon previous methods of holographic storage.