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How much vitamin D do you get from the sun?
health.howstuffworks.com/wellness/food-nutrition/vitamin-supplements/how-much-vitamin-d-from-sun.htm
Getting vitamin D from the sun is one of the best ways to get your requirements. But exactly how much vitamin D do you get from the sun? Find out.
How Efflorescence Works
home.howstuffworks.com/home-improvement/construction/materials/efflorescence.htm
Even Michelangelo had to deal with efflorescence -- white deposits that appear on masonry -- while painting the Sistine Chapel. What causes this unsightly problem, and how can you address it if it shows up on the surfaces of your home?
How Bone-conducting Headphones Work
electronics.howstuffworks.com/gadgets/audio-music/bone-conducting-headphones.htm
Using bone-conducting headphones instead of ear buds may be a lot better for your ears. How do these bone-conducting headphones do their job?
5 Rare Parasites Found in the Human Body
health.howstuffworks.com/diseases-conditions/infectious/5-rare-parasites.htm
Rare parasites can be creepy. We're willing to bet that you'd go to almost any length to avoid spending time with the five rare parasites.
5 Secrets About the Soviet Space Program
science.howstuffworks.com/5-secrets-about-soviet-space-program.htm
The Soviets were secretive about their space program. We're telling five of the biggest now.
How Pirate Radio Rocked the 1960s Airwaves and Still Exists Today
history.howstuffworks.com/historical-events/pirate-radio.htm
When British radio wouldn't play the Rolling Stones' 'Let's Spend the Night Together,' in the 1960s, a ship moored off the coast of England would.
7 Warning Signs of a Looming Recession
money.howstuffworks.com/7-warning-signs-looming-recession.htm
Good luck predicting the economic future; even the experts get it wrong. But there are sure warning signs to look for when a recession is ahead.
How the 'Wow!' Signal Works
science.howstuffworks.com/science-vs-myth/unexplained-phenomena/wow-signal.htm
In 1977, SETI volunteer Jerry Ehman saw a transmission so exciting he circled it on paper and wrote the word "Wow!" It seemed to indicate a message from outer space. But what was it really?
How Mobile Medicine Works
health.howstuffworks.com/medicine/mobile-medicine.htm
Mobile medicine allows health professionals to reach people in need. Learn how mobile medicine works.
How Nitrous Oxide Works
science.howstuffworks.com/nitrous-oxide.htm
At the same time scientists discovered that nitrous oxide could numb agonizing pain, they also found it could make you really lightheaded and silly. Yes, huffing parties started in the 1700s.