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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.
Why Can't We Generate All Our Energy From Wind Power?
Why can't we generate all the electricity we need from the wind? Learn more about generating energy from wind power.
Convergent Evolution: When a Good Idea Moves Between Species
science.howstuffworks.com/life/evolution/convergent-evolution.htm
Organisms not related to each other can develop similar physical attributes without even exchanging notes.
Will the U.S. Ever End Its Dependence on Foreign Oil?
science.howstuffworks.com/environmental/energy/cut-dependence-foreign-oil.htm
The United States is the world's top producer of oil, but it still depends on foreign countries for millions of barrels, as well. Will there ever be a time when the U.S. is totally independent when it comes to oil production?
Oxygen Bleach
home.howstuffworks.com/how-to-disinfect-your-bathroom-without-bleach.htm
Is chlorine bleach your go-to bathroom cleaner? Well it doesn't have to be. Oxygen bleach is a popular alternative to chlorine bleach because it's less smelly, more eco-friendly and safe to use on colored clothes.
The Tallest Mountain in the U.S. and 7 Close Contenders
science.howstuffworks.com/environmental/earth/tallest-mountain-in-us.htm
Although most of the highest mountains in the world are in Asia (looking at you, Mount Everest and Himalayas), the United States is home to some of the most breathtaking and impressive mountain ranges in the world.
Why do we sleep?
health.howstuffworks.com/mental-health/sleep/basics/why-do-we-sleep.htm
Why do we sleep? Researchers have had a hard time trying to answer this question, but have a few ideas. Take a look at theories and learn why we sleep.
Prevent Allergy Symptoms While Traveling
Traveling to a new place can present our senses with a whole host of allergy triggers. Follow our tips for reducing your allergies while traveling.
Ringling Bros. Retiring Elephants Early. PETA Still Not Smiling
All 11 of the circus's touring elephants are headed for a Florida retirement in May. Learn more about Ringling's elephants at HowStuffWorks Now.
Assessing the Average Quicksand Deaths Per Year
science.howstuffworks.com/environmental/earth/geology/do-people-die-in-quicksand.htm
Science has determined that disappearing completely into quicksand isn't possible - but that doesn't mean that getting stuck still won't kill you.