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Why would circumcision decrease a man's risk of contracting AIDS?
science.howstuffworks.com/environmental/life/cellular-microscopic/circum-aids.htm
The results of three recent studies show that an uncircumcised man is twice as likely to contract AIDS from an infected woman as is a circumcised one.
How Blackjack Works
entertainment.howstuffworks.com/blackjack.htm
Blackjack (also known as "21") is one of the most popular casino games, at least partly because the rules are easy to grasp. There's one aim: Get as close to 21 as possible. Find out the real deal here.
How the New $20 Bill Works
money.howstuffworks.com/new-twenty.htm
With the introduction of the new $20 bill, the U.S. Treasury has introduced a whole new element to the dollar: color. Learn about the new look of the currency and about the benefits of the new features.
What is gray water, and can it solve the global water crisis?
home.howstuffworks.com/green-living/gray-water.htm
Gray water is all of the wastewater that comes from your washer, sinks, bathtub or shower. Learn about gray water and how gray water can be recycled.
How Genealogy Works
people.howstuffworks.com/culture-traditions/genealogy/genealogy.htm
Building a genealogy, or family tree, can be a huge project. Learn how to research your ancestors and construct a detailed family genealogy.
Why Do We Find Waiting on Hold So Irritating?
money.howstuffworks.com/why-waiting-on-hold-so-irritating.htm
'Your call is very important to us...' Uh, really? Then why are you still on hold? HowStuffWorks looks at the art and science of being put on hold.
4 Reasons Your Phone Keeps Dropping Calls
electronics.howstuffworks.com/4-reasons-phone-keeps-dropping-calls.htm
Weird things can affect your call's signal strength. HowStuffWorks looks at four reasons your cellphone or smartphone keeps dropping calls.
How Airports Work
science.howstuffworks.com/transport/flight/modern/airport.htm
Did you know that airports were once known as "flying fields" because planes took off and landed in large fields? Journey through the hidden world of airports in this article, but without the stress, nail-biting and packages of peanuts.
Will a Third-Party Candidate Ever Win the White House?
people.howstuffworks.com/third-party-candidate.htm
HowStuffWorks looks at the many hurdles a third-party presidential candidate faces in the U.S., and why it's harder than ever for them to be elected.
How Tooth Whitening Works
science.howstuffworks.com/innovation/everyday-innovations/tooth-whitening.htm
In the past few years, tooth-whitening has exploded as the physical upgrade of choice. Unlike nose jobs and chin tucks, just about anybody can afford to try this at home. Learn about different whitening techniques and how they work, and decide if you should give it a try.