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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.
What Is ESP? How ESP Works
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm
Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?
How Projection Television Works
electronics.howstuffworks.com/projection-tv.htm
Projection television can provide an HD picture at a range of sizes and prices. Learn about front and rear projections TVs and read HDTV reviews.
CPR: What You Need to Know
health.howstuffworks.com/medicine/first-aid/cpr.htm
CPR can save lives, and you don't have to be a doctor to learn how to give CPR. Learn CPR technique with diagrams and step-by-step explanations.
How Prenatal Testing Works
health.howstuffworks.com/pregnancy-and-parenting/pregnancy/issues/prenatal-testing.htm
During a pregnancy, different kinds of prenatal testing are an important part of the process. See how prenatal testing protects both the mother and child.
How Web Servers Work
computer.howstuffworks.com/web-server.htm
When you type a Web site address into your browser, Web servers are doing the work of getting you the page you request. Find out how these machines locate Web pages and deliver them to your computer.
How Baleen Whales Work
animals.howstuffworks.com/mammals/baleen-whale.htm
Baleen whales have plates with coarse bristles for filter feeding. Learn how baleen whales differ from toothed whales that hunt squid and other prey.
How will landing on Mars work?
science.howstuffworks.com/landing-on-mars.htm
Landing on Mars will be one of the most dangerous and rewarding space missions. Learn how landing on Mars will further our understanding of space.
How Predatory Lending Works
money.howstuffworks.com/predatory-lending.htm
Predatory mortgage lenders take advantage of inexperienced homebuyers and poor credit risks. Learn about predatory lending and how to avoid a con.
How Blowtorches Work
home.howstuffworks.com/blowtorch.htm
Blowtorches produce an exceptionally hot flame and harnesses that heat to mold and cut metal. Learn how the blowtorch revolutionized welding.