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What are endorphins?
science.howstuffworks.com/life/inside-the-mind/emotions/endorphins.htm
What are endorphins? Learn about endorphins and happiness and HowStuffWorks.
How Interpol Works
people.howstuffworks.com/interpol.htm
Interpol is an international police agency that tracks criminals across national borders. Lean about Interpol and find out how Interpol is organized.
Do cows pollute as much as cars?
animals.howstuffworks.com/mammals/methane-cow.htm
Cow flatulence produces the greenhouse gas methane, which is linked to global warming. Find out how scientists are working to reduce cow flatulence in livestock.
How the Ferrari 599 GTB Fiorano Works
auto.howstuffworks.com/ferrari-599-gtb-fiorano.htm
The Ferrari 599 GTB Fiorano climbs from 0-100 mph in seven seconds flat. Learn more about the most powerful front V-12 GT Ferarri has ever produced.
Top 5 Car Gadgets
electronics.howstuffworks.com/gadgets/automotive/5-car-gadgets.htm
Car gadgets can make your driving experience a little more fun, not to mention flashy. Take a look at the top five car gadgets to perk up your vehicle.
What are fireplace inserts?
home.howstuffworks.com/home-improvement/construction/materials/fireplace-inserts.htm
Have you ever wondered what fireplace inserts are? Find out what fireplace inserts are at HowStuffWorks,
Who was Marco Polo?
history.howstuffworks.com/historical-figures/who-was-marco-polo.htm
Marco Polo was an 11th-century Italian explorer responsible for bringing information about China to Europe. Read about Marco Polo and his biography.
How Camper Towing Works
auto.howstuffworks.com/auto-parts/towing/vehicle-towing/trailer/camper-towing.htm
Camper towing is easy if you know what you're doing. Read all about camper towing at HowStuffWorks.
Filing Income Taxes
money.howstuffworks.com/personal-finance/personal-income-taxes/filing-income-taxes.htm
Filing income taxes can be stressful, but these tax tips will make filing taxes much simpler. Read our list of income tax tips.
How Sewer and Septic Systems Work
home.howstuffworks.com/home-improvement/plumbing/sewer.htm
Each time you flush the toilet or wash something down the drain, you create sewage. Find out where it goes before it flows into a river near you!