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Why do those long, white clouds form behind jets flying high overhead?
science.howstuffworks.com/transport/flight/modern/question195.htm
Contrails are those long white clouds that form in the wake of an airplane flying at altitude. What causes these contrails and what are they made of? Learn the answer to this question in this article from HowStuffWorks.
How does catnip work?
animals.howstuffworks.com/pets/question303.htm
What exactly is catnip? How does it work? Learn about catnip at HowStuffWorks.
Why do they include jokers in a deck of cards?
entertainment.howstuffworks.com/question310.htm
Why do they include jokers in a deck of cards?
How does stealth technology work?
science.howstuffworks.com/question69.htm
When an airplane is described as a "stealth" aircraft, what does that mean? What is "stealth technology" and how does it work?
How do trick birthday candles work?
science.howstuffworks.com/innovation/science-questions/question420.htm
How do trick birthday candles work -- the kind that re-light themselves after you blow them out?
What's the difference between a hammer drill and an impact driver?
home.howstuffworks.com/difference-between-hammer-drill-and-impact-driver.htm
Hammer drills and impact drivers exert great force but from different directions. Learn about the difference between a hammer drill and an impact driver.
What makes steel wool rust?
home.howstuffworks.com/what-makes-steel-wool-rust.htm
Steel wool is made in part of iron, and iron is prone to rust. Learn what makes steel wool rust in this article.
How long will I need treatment for depression?
Learn more about depression treatment from Discovery Health. Learn more information about depression, treatment options, and prevention.
How to Take Care Of a Hermit Crab
animals.howstuffworks.com/pets/how-to-take-care-of-hermit-crab.htm
Do you know how to take care of a hermit crab? Find out how to take care of a hermit crab in this article from HowStuffWorks.
What are some common symptoms of peanut allergies?
What are some common symptoms of peanut allergies? Learn about the common symptoms of peanut allergies in this article.