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Why would a female athlete fail a gender test?
entertainment.howstuffworks.com/gender-test.htm
Why would a female athlete fail a gender test? Find out why doctors may have trouble distinguishing someone's gender.
How can salamanders regrow body parts?
animals.howstuffworks.com/amphibians/salamander-regrow-body-parts.htm
A salamander can regrow body parts -- and scientists are studying it to figure out how humans can. Learn how a salamander can regrow body parts.
How Does Santa Make It Around the World in One Night?
people.howstuffworks.com/culture-traditions/holidays-christmas/santa-around-world.htm
Santa's journey around the world takes some amazing technology in order for him to make it around the world in one night. Learn about Santa's journey.
Does what you smell determine what you buy?
money.howstuffworks.com/scent-marketing.htm
Scent marketing is how businesses use different smells in an attempt to influence what you buy. Learn more about the technique of scent marketing.
Cat-Care Tips
animals.howstuffworks.com/pets/cat-care-tips.htm
Cats are among the most popular housepets, giving years of love and enjoyment to their owners. But they require special care. Follow these cat-care tips.
How Can Light Kill Viruses?
science.howstuffworks.com/life/cellular-microscopic/light-virus.htm
Hand sanitizers can only get you so far in preventing a viral infection. Scientists are discovering how visible light can be used to destroy viruses. Learn about the laser technique and what it means for the future.
How Cicadas Work
animals.howstuffworks.com/insects/cicada.htm
Some cicadas are annual breeders and some show up about every 17 years. They all produce a 'song' that is almost loud enough to damage our ears.
Can we plug the hole in the ozone layer?
science.howstuffworks.com/environmental/green-science/plug-hole-ozone-layer.htm
Plugging the hole in the ozone layer is explained in this article. Learn about plugging the hole in the ozone layer.
How to Clicker-train a Dog
animals.howstuffworks.com/pets/how-to-clicker-train-a-dog.htm
Are you wondering how to clicker-train a dog? Check out this article and learn how to clicker-train a dog.
How Automotive Metal Cutting Works
auto.howstuffworks.com/under-the-hood/auto-manufacturing/automotive-metal-cutting.htm
Automotive metal cutting has to be an exact science. Visit HowStuffWorks to learn all about automotive metal cutting.