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Antioxidants: What You Need to Know
health.howstuffworks.com/wellness/food-nutrition/facts/antioxidant.htm
Antioxidants are believes to lower the risk of cancer, heart disease, and memory loss. Learn about antioxidants and truths about antioxidants.
How Tipping Works
people.howstuffworks.com/tipping.htm
Tipping is a multibillion-dollar industry that varies around the globe. Learn more about how tipping works in the United States and internationally.
What Is Biodiesel?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/biodiesel.htm
Biodiesel turns biodegradable fats and oils into an alternative fuel for your car. Learn about biodiesel components, biofuel history and biodiesel pros and cons.
How Sudoku Works
entertainment.howstuffworks.com/leisure/brain-games/sudoku.htm
Sudoku is a popular logic-based game of numbers. Learn sudoku strategies, see a puzzle solved and find out about the origins and controversies of sudoku.
How Street Gangs Work
people.howstuffworks.com/street-gang.htm
According to a 2005 report by the Department of Justice, there are at least 21,500 gangs and more than 731,000 active gang members in the United States. Learn how and why street gangs form.
How Drifting Works
auto.howstuffworks.com/auto-racing/motorsports/drifting.htm
Drifting is a style of racing that was born on the mountain roads of Japan in the 1990s. Learn about drifting and find out how drift racing competitions work.
How Olympic Torches Work
entertainment.howstuffworks.com/olympic-torch.htm
Every two years, the Olympic torch makes its way through a huge relay to the Opening Ceremony that kicks off the Olympic Games. Learn all about the torch's history, construction and transport.
How Self-inflating Tires Work
auto.howstuffworks.com/self-inflating-tire.htm
Self-inflating tires can change their PSI to adjust to road conditions. Learn about self-inflating tire systems and how they're being adapted for consumers.
Earth: A Primer on the Third Rock From the Sun
science.howstuffworks.com/earth.htm
Earth is an enormous and extremely complex planet. Learn about the inner workings of the planet Earth and find out what forces are constantly at work on Earth.
How Spies Work
people.howstuffworks.com/spy.htm
Spying is a tense and often deadly way for governments to gather secret information from their enemies. Learn how spies are recruited and how they obtain information.