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The Ultimate Harry Potter Quiz
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This Ultimate Harry Potter quiz will test your knowledge of this popular children's series. Test yourself with this Harry Potter quiz.
Top 10 Rare Books
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The top 10 rare books may surprise you. Visit HowStuffWorks to learn the top 10 rare books.
How Toilet Paper Works
home.howstuffworks.com/toilet-paper.htm
It's an absorbing topic: Where did toilet paper come from, how is it made and why did it take so long for people to start using it?
Famous Black Engineers Throughout History
science.howstuffworks.com/engineering/structural/famous-black-engineers.htm
These African American men and women were trailblazers, and in some cases, business leaders in the field of engineering.
How do scratch-and-sniff stickers work?
science.howstuffworks.com/innovation/science-questions/question274.htm
How do scratch-and-sniff stickers work? What makes them last for years and years?
Why do they include jokers in a deck of cards?
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Why do they include jokers in a deck of cards?
What is a Phillips head screwdriver?
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There are many different types of screws and screwdrivers, each with its own characteristics and advantages. Learn about the Phillips head screwdriver in this article.
New Phone App Computes Calories By Taking a Picture of Your Meal
It's Sunday morning and you're out for a delightful brunch. You know that mile high stack of chocolate chip pancakes blanketed with maple syrup is outside of your diet, but you're just not quite sure how much.
Is a daily shower too much for your skin?
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Is a daily shower too much for your skin? Find out if a daily shower is too much for your skin at HowStuffWorks.
What Is Pi?
science.howstuffworks.com/math-concepts/pi.htm
Whether the circle is as big as planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?