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How Air Curtains Work
home.howstuffworks.com/home-improvement/construction/green/air-curtains.htm
Is it possible for a stream of air to behave like a door? Surprisingly, yes. This door may not block out burglars, but it can certainly fight against cold winds, flying insects and pollutants.
Can You Get a Perfect Score on This Dangerous Animals Quiz?
play.howstuffworks.com/quiz/can-you-get-a-perfect-score-this-dangerous-animals-quiz
Look out! Think you have what it takes to ace this dangerous animals quiz? Try your luck now, and remember ... proceed with caution!
Can You Name All of These Woodwind Instruments?
play.howstuffworks.com/quiz/can-you-name-all-these-woodwind-instruments
Woodwind instruments are among some of the earliest musical instruments fashioned and played by humans. Do you think you know enough about them to identify each of these woodwind instruments from just one image? Take the quiz and find out!
Can You Decode These Emoji Sentences?
play.howstuffworks.com/quiz/can-you-decode-these-sentences-made-with-emoji
Many people use a variety of emoji to spell out funny and witty phrases to their friends and families. Think you know enough about emoji to guess what they spell out? Test your emoji knowledge on this quiz now to see!
How Good Are You at Spelling, Really?
play.howstuffworks.com/quiz/how-good-are-you-at-spelling-really
Think you're a good speller? Let's put that to the test! We're going beyond "the" and "teh", "broccoli" and "brocoli" or "truely" and "truly" to quiz you on some of the hardest words for English speakers to get right.
We Will Rock You: The Queen Quiz
play.howstuffworks.com/quiz/queen-quiz
Do you know more about Queen than just the chorus of "We Are the Champions?" Prove that you're genuinely Rock-Star Royalty by acing the ultimate Queen quiz!
The "How Smart Are You?" Quiz
play.howstuffworks.com/quiz/the-how-smart-are-you-quiz
It takes a true Jack or Jill of all trades to pass this tough general knowledge quiz that covers everything from geography to space. Are you up for the task?
How do plants compare to solar cells when it comes to collecting solar energy?
science.howstuffworks.com/environmental/green-science/question638.htm
How do plants compare to solar cells when it comes to collecting solar energy? Would you get more power from an acre of ground by putting solar cells on it or by raising plants?
What makes your knuckles pop?
health.howstuffworks.com/human-body/systems/musculoskeletal/question437.htm
What makes your knuckles pop, and is it really bad for you?
Health Benefits of Legumes
recipes.howstuffworks.com/health-benefits-of-legumes-ga.htm
Legumes offer many health benefits, including lowering heart-disease risk and stabilizing blood glucose levels. Learn the health benefits of legumes.