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10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
10 Historically Pivotal Murders
people.howstuffworks.com/10-historically-pivotal-murders.htm
Few crimes can change history more than murder. Learn which historically pivotal murders sent shock waves through the public psyche at HowStuffWorks.
10 People You Probably Didn't Know Were Black
people.howstuffworks.com/culture-traditions/genealogy/10-people-you-didnt-know-were-black.htm
Some people don't appear to be Black. Learn about 10 people you probably didn't know were Black in this list from HowStuffWorks.
10 Things Done Completely Out of Spite
history.howstuffworks.com/historical-events/10-things-done-out-of-spite.htm
Spite is not just for kids with broken toys. Many adults have gone to unbelievable lengths to pay back someone who did 'em wrong. Here are 10 classic examples.
Why Some Cultures Require Women to Wear Veils
people.howstuffworks.com/veil.htm
Burqas are commonly associated with repression and religious extremism. But to many people, the veil is a sign of modesty and piety, as well as a badge of honor. What is the true meaning of the veil?
How College Admissions Tests Work
money.howstuffworks.com/personal-finance/college-planning/admissions/college-admissions-test.htm
College admissions tests, such as the SAT and ACT are explained in this article from HowStuffWorks. Learn about college admissions tests.
How the Nintendo 3DS Works
electronics.howstuffworks.com/nintendo-3ds.htm
The Nintendo 3DS portable video game system lets you play in 3-D without having to wear special glasses. See how the Nintendo 3DS works.
How the Apple iMac Works
computer.howstuffworks.com/macs/imac.htm
The iMac is often credited with bringing Apple back from the brink of disaster. What is it about the iMac that intrigues and enchants users? Find out.
10 20th-Century Staples We Never Thought Would Die
A lot of folks once thought these 10 things would never become obsolete. Learn about 10 20th-century staples we never thought would die at HowStuffWorks.
How the Stonewall Riots Worked
history.howstuffworks.com/historical-events/stonewall-riots.htm
The Stonewall Riots mark a major a turning point in the fight for LGBTQ rights in the U.S. Learn about the pivotal event at HowStuffWorks.