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How EPA Fuel-Economy Testing Works
auto.howstuffworks.com/fuel-efficiency/fuel-economy/28004-epa-fuel-economy-explained.htm
Why do the EPA's fuel economy numbers almost always seem to be off-base? Learn how the EPA tests new cars and trucks to gauge their fuel economy.
Can You Name These Clothing Items From Around the World?
play.howstuffworks.com/quiz/can-you-name-these-clothing-items-from-around-the-world
Calling all globetrotting fashionistas: Test your fashion sense in this quiz, featuring styles from east to west and north to south. See if you have what you need to pack for a fashion trip around the world!
What are some MSG allergy symptoms?
health.howstuffworks.com/diseases-conditions/allergies/food-allergy/other/msg-allergy-symptoms.htm
MSG is an artificial flavor enhancer found in many foods. Learn about MSG allergy symptoms in this article.
What is in shellfish that causes an allergy?
What is in shellfish that causes an allergy? Learn what's in shellfish that causes an allergy in this article.
How Electric Guitars Work
entertainment.howstuffworks.com/electric-guitar.htm
Electric guitars revolutionized popular music and culture. Learn more about electric guitars, electric guitar pickups, amps, and the history of electric guitars.
How Gears Work
science.howstuffworks.com/transport/engines-equipment/gear.htm
If a device has a motor, engine or spring, it probably has gears! But what do gears do, exactly, and how do they do it?
What Does a Camshaft Do?
auto.howstuffworks.com/camshaft.htm
Camshafts have a great effect on engine performance. Learn about camshafts, single and double overhead cams, pushrod engines and camshaft design.
How Thermoses (Vacuum Flasks) Work
home.howstuffworks.com/thermos.htm
How can the same device keep hot things hot and cold things cold? Find out what goes on inside a Thermos!
How Patriot Missiles Work
science.howstuffworks.com/patriot-missile.htm
Patriot missiles are designed to detect, target and then hit an incoming missile. How do the systems do that?
How Unimogs Work
auto.howstuffworks.com/unimog.htm
The first Unimog prototypes were created in 1947. Read about the history and development of the Unimog truck.