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How Kaleidoscopes Work
science.howstuffworks.com/kaleidoscope.htm
Kaleidoscopes have been fascinating people since the early 19th century. Whether you think of kaleidoscopes as toys or as works of art, no matter how often you look inside, you'll never see the same thing twice.
How Helicopters Work
science.howstuffworks.com/transport/flight/modern/helicopter.htm
Believe it or not, the marvel we know as the helicopter began as a Chinese top consisting of a shaft - a stick - adorned with feathers on one end.
Can You Sue Over 'Third-hand Smoke' Exposure?
people.howstuffworks.com/can-you-sue-thirdhand-smoke-exposure.htm
Could there be a day when people sue over tobacco residue left behind in a building's walls or carpet? HowStuffWorks investigates.
Tau Herculids Meteor Shower Produced Shooting Stars, but no Meteor Storm
science.howstuffworks.com/tau-herculids-meteor-shower-news.htm
The Tau Herculids meteor shower was made of debris from the broken comet SW3 and produced a lot of shooting stars, but not quite the meteor shower that was hoped for.
10 Scientific Breakthroughs We Literally Couldn't Live Without
You might argue we have scientists to thank for our own survival. What breakthroughs have kept the human race from dying out?
How the GM Sunraycer Worked
auto.howstuffworks.com/sunraycer.htm
GM's Sunraycer was a solar car ahead of its time. Read the history of the sunraycer and why it almost took General Motors down with it.
How Marijuana Works
science.howstuffworks.com/marijuana.htm
Marijuana isn't just a recreational drug for hippies and philosophy majors -- its psychoactive history ranges from Egyptian mummies to modern U.S. politics. What's the big deal about this leafy, green plant?
How the Metric System Works
science.howstuffworks.com/metric-system.htm
Ever heard of a little unit called a femtometer? Can you tell us how much you weigh -- in petagrams? We know you can't, so hurry up and start reading. We have work to do.
Do you really need to have a period every month?
health.howstuffworks.com/wellness/women/general/monthly-period.htm
A monthly period is how Mother Nature would have her way with women, but is a monthly period necessary? Birth control manufacturers don't think so.
When You Smell Poop Are You Actually Inhaling Poop Molecules?
health.howstuffworks.com/human-body/systems/digestive/smell-poop-inhaling-poop-molecules.htm
Smelling fecal matter is gross enough, so the possibility that tiny bits of poop are actually getting into your nose is outright disgusting. But should you be worried?