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How Urban Sprawl Works
science.howstuffworks.com/environmental/green-science/urban-sprawl.htm
Urban sprawl occurs when people move from cities to the areas around them and develop the land with houses, businesses and roads. Learn about urban sprawl.
How and why do carcinogens cause cancer?
health.howstuffworks.com/diseases-conditions/cancer/facts/carcinogens-cause-cancer.htm
Why do carcinogens cause cancer? Take a look at studies on common carcinogens and learn how carcinogens cause cancer at Discovery Health.
10 Famous Fathers
people.howstuffworks.com/10-famous-fathers.htm
Each of the dads on this list is a fascinating case study in how career success intermingles with raising kids.
How the Sturgis Motorcycle Rally Works
auto.howstuffworks.com/sturgis-motorcycle-rally.htm
The Sturgis Motorcycle Rally brings hundreds of thousands of motorcycle enthusiasts to South Dakota every year. Read what makes the Sturgis Rally so popular.
Can You Pick the Best Seller From These Line Ups?
play.howstuffworks.com/quiz/can-you-pick-the-best-seller-from-these-line-ups
The automobile is one of the most important inventions in recent history, changing how the world travels, expanding civilizations, and giving power to the people. How much do you know about its impact? Take this quiz about some of the best-selling vehicles to find out!
Can You Guess All 50 States From an Image Of Their Outline?
Did you get an A in your geography class? Do you know the state mottos and famous landmarks that make each state unique? Prove it by challenging yourself with this quiz!
10 Amazing Green Cities
science.howstuffworks.com/environmental/green-science/five-amazing-green-cities.htm
Sure, the Emerald City looked green, but you won't need green-tinted glasses to see how environmentally friendly the cities on this list are. What makes a city amazingly green?
Why Do We Celebrate Labor Day?
people.howstuffworks.com/culture-traditions/holidays-other/question459.htm
Why do we celebrate Labor Day, and why is it on the first Monday in September?
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.
Jackals: Canine Survivors and Tricksters of Folklore
animals.howstuffworks.com/mammals/jackals.htm
Jackals are adaptable and wily, survivalists to the core. HowStuffWorks looks at these formidable canines.