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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.
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 Corrective Lenses Work
science.howstuffworks.com/innovation/everyday-innovations/lens.htm
Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription.
How Near-death Experiences Work
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/near-death-experience.htm
Near-death experiences (NDEs) are seemingly supernatural events that some people have when they're at the brink of death. Find out who typically has them and how people have tried to explain them.
How the Grim Reaper Works
science.howstuffworks.com/science-vs-myth/strange-creatures/grim-reaper.htm
The Grim Reaper is the black-cloaked, scythe-wielding personification of death. Learn why the Grim Reaper is so grim and why he's a guy.
Multiple Sclerosis Overview
health.howstuffworks.com/diseases-conditions/musculoskeletal/multiple-sclerosis.htm
Multiple sclerosis, also known as MS, causes the body to attack itself. How do you get multiple sclerosis, and why are twice as many women as men affected?
10 Common Myths About Getting Pregnant
There are many myths about getting pregnant. Do you know what is truth from fiction? See 10 common myths about getting pregnant to learn more.
How Radioactive Cleanup Works
science.howstuffworks.com/radioactive-cleanup.htm
It's lunchtime, and you've spastically spilled soda all over your desk. Chances are you could tackle that mess faster than we could say "Mr. Clean." What do you do though when the spill is radioactive?
10 Medical Conditions Once Found in Sideshows
entertainment.howstuffworks.com/arts/circus-arts/10-medical-conditions-once-found-in-sideshows.htm
Years ago, sideshows were spaces to parade people's disabilities. Learn about 10 medical conditions once found in sideshows at HowStuffWorks.
10 Worst Ways History Has Repeated Itself
history.howstuffworks.com/historical-events/10-worst-ways-history-has-repeated-itself.htm
As they say, if we don't learn from history, we're doomed to repeat it. And as these 10 historical events prove, humans seem to be more prone to repeating than learning.