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Your search for "human history" returned 2,546 results
Why Don't We All Use the Same Time Zone?
science.howstuffworks.com/environmental/earth/geophysics/time-zone.htm
The world has only had time zones since the late 1800s. Some people think we should eliminate them and have just one universal time instead.
Touring the False Facades of New York City
home.howstuffworks.com/touring-false-facades-new-york-city.htm
They blend right into their neighborhoods, but hidden inside are systems integral to maintaining a city.
How Tongue Splitting Works
people.howstuffworks.com/culture-traditions/body-art/tongue-splitting.htm
Tongue splitting is the process of splitting your tongue down the middle lengthwise. Explore tongue splitting history, process and health information.
How to Prevent Sexually Transmitted Diseases
health.howstuffworks.com/wellness/preventive-care/how-to-prevent-sexually-transmitted-diseases.htm
Preventing sexually transmitted diseases is simply a matter of being prepared and using your head. Learn how to treat and prevent various STDs.
Sand Is in Such High Demand, People Are Stealing Tons of It
As the world becomes more urbanized, the demand for sand, a key ingredient of concrete, keeps growing. But there's only so much sand to go around.
How Knife Throwing Works
entertainment.howstuffworks.com/arts/circus-arts/knife-throwing.htm
Knife throwing is a performance art and awesome pastime. Learn about the technique and history of knife throwing.
How X-rays Work
science.howstuffworks.com/x-ray.htm
X-ray machines seem to do the impossible: They see straight through clothing, flesh and even metal, thanks to some very cool scientific principles at work. Find out how X-ray machines see straight to your bones.
How the African Diamond Trade Works
money.howstuffworks.com/african-diamond-trade.htm
Blood diamonds in Africa are sold illegally to fund civil wars and terrorism. Find out about blood diamonds in Africa and the African diamond trade.
The Radium Girls' Dark Story Still Glows With Death and Deceit
history.howstuffworks.com/historical-events/radium-girls.htm
The sad story of the Radium Girls is one that details how human strength can overcome corporate greed, even in the most dire of circumstances.
How do you define hate?
science.howstuffworks.com/life/inside-the-mind/emotions/define-hate.htm
How do you define hate? Hatred is a way to wipe out fear of something by eliminating it. Find out how hate has been defined throughout history.