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How Currency Works
money.howstuffworks.com/currency.htm
Currency is a complex aspect of human civilization. Find out all about these symbols of financial value.
How Guitar Pedals Work
electronics.howstuffworks.com/gadgets/audio-music/guitar-pedal.htm
Guitar pedals can create a variety of sound affects. Learn different guitar pedal techniques and types of guitar pedals at HowStuffWorks.
How Leper Colonies (Leprosaria) Work
health.howstuffworks.com/diseases-conditions/infectious/leper-colonies.htm
Leprosy, or Hansen's disease, was the AIDS of the first millennium. Find out how leper colonies (leprosaria) worked at HowStuffWorks.
Top 10 Green Heating and Cooling Technologies
Compared to standard heating and air systems, going green is better for the environment -- and your wallet because they use less energy. So what kind of green HVAC systems are on the market today? Read on to find out.
Ferrari History
auto.howstuffworks.com/ferrari-history.htm
Discover Ferrari's fascinating history through firsthand accounts of those involved, including a revealing look at enigmatic founder Enzo Ferrari.
10 Hardest Things to Teach a Robot
science.howstuffworks.com/10-hardest-things-to-teach-robot.htm
If we're ever going to live in a world in which machines behave like people, we humans have some teaching to do. But as this writing robot attests, we're not as far away as you might think.
11 of the World's Worst Serial Killers
people.howstuffworks.com/10-worlds-most-prolific-serial-killers.htm
Some serial killers have murdered more than 100 people. Who are the worst serial killers, and why did they do it?
How the Apple Watch Works
electronics.howstuffworks.com/gadgets/high-tech-gadgets/apple-watch.htm
Apple is reinventing personal tech with Apple Watch. Is wrist communicator dream finally coming true? Learn more about Apple Watch at HowStuffWorks.
10 Big Questions About Buddhism, Answered
people.howstuffworks.com/10-big-questions-about-buddhism-answered.htm
What's the point of meditation? Are all Buddhists vegetarians and pacifists? What do we misunderstand about Karma? Find out more about Buddhism in our article.
How Meth Works
science.howstuffworks.com/meth.htm
Meth, or methamphetamine, is a stimulant that can leave users toothless and paranoid. So why do so many people go after that high? Learn what meth can do.