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450 Huge Geometrical Earthworks in the Amazon Hint at Past Civilizations
science.howstuffworks.com/environmental/earth/archaeology/amazon-geoglyph-earthwork-agroforestry.htm
Although the trenched enclosures were probably used to conduct rituals, they can tell us how the ancient indigenous people of the Amazon managed their forests.
What Does It Take for a Product to Be Labeled 'Made in the USA'?
people.howstuffworks.com/what-does-it-take-product-labeled-made-the-usa.htm
The rules governing what country goes on a product's "made in" label in the U.S. are complex. Learn more at HowStuffWorks.
Human Penis Bone Disappeared With Rise of Monogamy, Succinct Sex
science.howstuffworks.com/environmental/earth/archaeology/human-penis-bone-baculum-monogamy.htm
Most mammals have a penis bone called a baculum, but humans don't. A new study sheds light on the history of the baculum, and why ours is missing.
There's No Such Thing as a 'Learning Style'
people.howstuffworks.com/learning-style-education-myth.htm
The myth of distinct styles of learning persists. Why? Learn more about learning preferences in this HowStuffWorks Now article.
Unraveling Khipu: The Inca Knot Language
The Incas never invented a system of written language, but khipu is how they communicated. HowStuffWorks looks at the language of the Inca.
Famous Mothers Quiz
people.howstuffworks.com/famous-mothers-quiz.htm
Take this HowStuffWorks quiz to test your knowledge of all types of mothers, from Ma Barker to Madonna.
The 'Dutch Reach' Prevents Bike Crashes
The Dutch Reach is saving the lives of bicyclists all over the world. HowStuffWorks looks at this simple tip that can prevent crashes.
How to Calculate Net Income
money.howstuffworks.com/personal-finance/personal-income-taxes/how-to-calculate-net-income.htm
Why is your bi-weekly paycheck less than your actual salary? Learn how to figure out your net income at HowStuffWorks.
Does the lead in lipstick cause cancer?
health.howstuffworks.com/skin-care/beauty/skin-and-makeup/lead-in-lipstick-cause-cancer.htm
Are there dangers lurking in your lip color? Find out if lead in lipstick can cause cancer at HowStuffWorks.
Why do Americans Sell Soda by the Liter but Milk by the Gallon?
money.howstuffworks.com/why-sell-soda-liter-milk-gallon.htm
Although it's said that Americans don't use the metric system, they sure love a 2-liter bottle of soda. Why is soda sold like that, but other products aren't?