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How Speakers Work
electronics.howstuffworks.com/speaker.htm
The best amplifier, receiver and CD player won't do you much good, if you don't have good speakers. Speakers are the final step in the stereo process -- the key component that turns electronic data into sound.
The World War II Quiz
play.howstuffworks.com/quiz/world-war-two-quiz
World War II was one of the defining conflicts of the 20th century. Just two decades after the end of World War I, WWII began in 1939 and saw the U.S. enter in 1941. Let's explore some of the specifics of the Second World War.
How Lie Detectors Work
people.howstuffworks.com/lie-detector.htm
Lie detection is a consistently controversial topic -- how can a machine tell truth from deception? Does everyone have the same physiological reaction when telling a lie? If so, how can some people "beat the box"? Find out what these devices measure and if they really can detect lies.
This Physics Quiz Is Really Hard, So We'll Be Impressed If You Get Even 10 Right
How will you REACT to this quiz? We're bringing in the big brains of physics to see if we can stump you. Do you have what it takes to pass without cheating?
Behind the X Prize
science.howstuffworks.com/x-prize.htm
We know who won - top-runner SpaceShipOne. We know what the team receives for that accomplishment: $10 million and an obscenely gigantic trophy. But what about the story behind the contest? Learn about the rules, restrictions, red tape, test crashes, successful launches and the technological innovations that may get you into sub-orbit sooner than you think.
How to Save Money on Home Energy
home.howstuffworks.com/green-living/how-to-save-money-on-home-efficiency.htm
When you upgrade your heating and cooling equipment, major appliances, and windows, you are investing in energy efficiency. Learn more.
How Nuclear Submarines Work
science.howstuffworks.com/nuclear-submarine.htm
Nuclear submarines are powered by nuclear reactors and may carry nuclear weapons. Read about nuclear submarines and how they changed the world's oceans forever.
How U.S. Marshals Work
people.howstuffworks.com/us-marshal.htm
The U.S. Marshals Service is the oldest law enforcement agency in the nation. Learn about famous U.S. Marshals and the duties and history of the U.S. Marshals.
Emergency Vehicles: Can You Identify More Than 30?
play.howstuffworks.com/quiz/emergency-vehicles-can-you-identify-more-than-30
We all know about fire trucks, police cars and ambulances, but what about the other emergency vehicles? Put your wits to the test and see if you can name more than 30 of these emergency vehicles.
Can airbags kill you?
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/can-airbags-kill-you.htm
Could airbags actually end up hurting or killing the people they're supposed to protect? Find out if airbags can kill you at HowStuffWorks.