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Why is it bad luck to spill salt?
people.howstuffworks.com/why-is-it-bad-luck-to-spill-salt.htm
If you spill some salt while you're cooking, you might fear a wave of oncoming bad luck. Why is toppling over some salt an omen of misfortune?
Why do you have two lungs but only one heart?
health.howstuffworks.com/human-body/systems/circulatory/two-lungs-one-heart.htm
The two lungs-one heart system evolved because that was all we needed to survive. Learn more about the evolution of the two lungs-one heart system.
Can You Pass This 1953 General Knowledge Quiz?
play.howstuffworks.com/quiz/can-you-pass-this-general-knowledge-quiz-from-1953
This is a general knowledge quiz about the all-important year 1953, but you'll need to know more than basic grade-school trivia. The facts we present may come in handy one day. So take time to take in some little-known 1953 history and build up your brain bank!
Is the Meaning of an Octopus Tattoo Dark or Positive? Exploring Its Significance
people.howstuffworks.com/octopus-tattoo-meaning.htm
Is an octopus tattoo meaning deep and symbolic? Discover its connection to intelligence, adaptability, mystery, and strength in different cultures.
10 Fluoride Facts You Should Know
health.howstuffworks.com/wellness/oral-care/products/10-fluoride-facts.htm
For decades people have been talking about fluoride facts and its pros/cons. Here are 10 fluoride facts as we try to get to the bottom of the fluoride debate.
How Water Works
science.howstuffworks.com/environmental/earth/geophysics/h2o.htm
Water is the most essential element to life on Earth. Learn about water, the properties of water and find out how the water cycle operates.
How Flavor Enhancers Work
recipes.howstuffworks.com/flavor-enhancers.htm
Flavor enhancers can brighten the flavors of almost any food. Learn how flavor enhancers change how food tastes.
Why do trans fat and saturated fat get such a bad rap?
health.howstuffworks.com/diseases-conditions/cardiovascular/cholesterol/trans-fat-saturated-fat.htm
Trans fat and saturated fat get a bad rap because they raise your cholesterol. Learn which foods have trans fat and saturated fat and how to avoid them.
10 Superhero Powers of the Animal Kingdom
animals.howstuffworks.com/animal-facts/10-animal-superpowers.htm
The animal kingdom is full of superheroes and superpowers. Read about 10 of the coolest superhero powers in the animal kingdom at HowStuffWorks.
The Mpemba Effect: Does Hot Water Really Freeze Faster Than Cold Water?
science.howstuffworks.com/dictionary/physics-terms/mpemba-effect.htm
Under the right conditions, hot water can somehow freeze faster than cold water. It's called the Mpemba effect. We'll explain how it happens.