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Your search for "knot theory" returned 30 results
How Valentine's Day Works
people.howstuffworks.com/culture-traditions/holidays-other/valentine.htm
Was there really a saint named "Valentine"? And why all the flowers and chocolate? Learn all about the origins and symbols of Valentine's Day.
Were the Clovis the first Americans?
history.howstuffworks.com/history-vs-myth/clovis.htm
The Clovis, ancient people who made the sophisticated Clovis projectile discovered at Clovis Indian sites, are a mystery. Read about the mysterious Clovis.
What is the lipstick indicator?
money.howstuffworks.com/lipstick-indicator.htm
The lipstick indicator is posited as one means of measuring consumer confidence in the economy. Read why the lipstick indicator isn't a fail-safe barometer.
Top 5 Ancient Incan Inventions
science.howstuffworks.com/innovation/inventions/5-ancient-incan-inventions.htm
The Incan empire had a highly developed organizational system and a near limitless workforce that helped create a culture of wonders. So what are some of their inventions that we know about today?
Is there such a thing as the seven-year itch?
health.howstuffworks.com/relationships/marriage/seven-year-itch.htm
Is there such a thing as the seven-year itch? Visit Discovery Health to learn if there is such a thing as the seven-year itch.
Where did the traditional anniversary gifts come from?
people.howstuffworks.com/culture-traditions/cultural-traditions/traditional-anniversary-gifts.htm
There are different anniversary gifts that are traditional for each year of marriage. Read about the traditional anniversary gifts at HowStuffWorks.
Harry Potter and the Sorcerer’s Stone — Film vs. Book Quiz
play.howstuffworks.com/quiz/harry-potter-and-the-sorcerers-stone--film-vs-book-quiz
Accio errors, replacements and exclusions! This quiz is all about what happens when books are adapted into movies. If you can get more than 30 of these correct, you'll receive your invitation to Hogwarts.
How the Papacy Works
people.howstuffworks.com/papacy.htm
Catholics around the world welcomed the election of Pope Francis in 2013. Besides providing spiritual leadership to millions worldwide, the pope has many other duties. Learn about the rules of the Papacy.
Explosions in Space: The Supernova Quiz
play.howstuffworks.com/quiz/explosions-space-the-supernova-quiz
How much do you know about supernovae? Show off your knowledge when you take this quiz about huge explosions in space - light-years away - and the science behind them.
Do you know where in the world you can find these famous statues?
play.howstuffworks.com/quiz/do-you-know-where-the-world-you-can-find-these-famous-statues-learn
Of the thousands of remarkable statues around the world, you may know where to find the Statue of Liberty, and maybe the Sphinx. But what about all the others? From The Thinker and Venus de Milo to the Olmec Colossal Heads and Moai, see if you can match the famous statue to where in the world you'd find it.