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How Gene Pools Work
science.howstuffworks.com/life/genetic/gene-pool.htm
The physical you is a result of your DNA, and your DNA is part of the human gene pool. Find out what the "gene pool" really is and what happens when it shrinks.
How Red-light Cameras Work
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/red-light-camera.htm
The light turns red. You're alone at the intersection. There's not another car in sight. Do you run it? Read this before you answer.
How many sharks are killed recreationally each year -- and why?
animals.howstuffworks.com/fish/sharks/shark-fishing.htm
Shark fishing is endangering these saltwater fish that have been around longer than the dinosaurs. Learn why shark fishing has become such a threat.
Do short people live longer?
health.howstuffworks.com/wellness/aging/aging-process/short-people-live-longer.htm
If short people live longer, why is modern man taller than his ancestors? Learn if short people live longer and how height and longevity are linked.
Why did brothers fight on opposite sides of the Civil War?
history.howstuffworks.com/historical-events/brother-against-brother.htm
Brother against brother was a motif of the Civil War as families were divided -- even Sen. John J. Crittenden's. Read about brother against brother in the war.
Do animals have personalities?
animals.howstuffworks.com/animal-facts/do-animals-have-personalities.htm
Do animals have personalities? Pet owners would answer with a resounding yes. Find out how scientists would answer, "Do animals have personalities?"
What's the ultimatum game?
money.howstuffworks.com/ultimatum-game.htm
The ultimatum game is a form of economics experiment that provides insight into the human psyche. Learn about the rules to the ultimatum game.
St. John's Wort: Herbal Remedies
health.howstuffworks.com/wellness/natural-medicine/herbal-remedies/st-johns-wort-herbal-remedies.htm
St. John's wort is used in herbal remedies treating strains, spasms and mood disorders. Learn about herbal remedies using St. John's wort.
Breast Cancer: Everything You Need to Know
health.howstuffworks.com/diseases-conditions/cancer/breast/breast-cancer.htm
Breast cancer is a disease impacting the lives of millions of women. Learn how breast cancer works, it symptoms and treatments.
How Weather Gadgets Work
electronics.howstuffworks.com/gadgets/home/weather-gadgets.htm
Weather gadgets are growing in popularity. Learn more about weather gadgets at HowStuffWorks.