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Types of Galaxies: Why Galaxies Come in Different Shapes
science.howstuffworks.com/why-some-galaxies-come-in-different-shapes.htm
Galaxies are complex systems held together by gravity, but the shapes of different types of galaxies are a result of gravity along with rotation speed and time.
Why Some Animals Eat Rocks to Aid in Digestion
animals.howstuffworks.com/animal-facts/gastroliths.htm
Gastroliths, or "stomach stones," are found in animals from chickens to sea lions. But what are they for?
The Ultimate Kissing Quiz
play.howstuffworks.com/quiz/kissing-quiz
It can be a sign of love, grief or respect worldwide. Kissing is a natural act that gives millions of people physical and psychological satisfaction, but where did it originate? Why does it make us feel good?
How Asteroid Belts Work
science.howstuffworks.com/asteroid-belt.htm
Asteroid belts may tell us how our very solar system came into existence. Learn all about asteroid belts, from their characteristics to what they can teach us.
Why Are Certain Foods Eaten Mainly at Breakfast?
recipes.howstuffworks.com/breakfast-foods.htm
Americans expect certain foods for breakfast. But why did these particular foods end up as morning meals? HowStuffFoods lets the foods tell the story.
ADHD Overview
health.howstuffworks.com/mental-health/adhd/adhd.htm
ADHD is known by other names, like ADD, and is a controversial disorder surrounded in myths. Is it real? Is ADHD in children just parental lack of control?
How to Treat Arthritis with Traditional Chinese Medicine
Traditional Chinese medicine for arthritis aims both to prevent the disease and to treat it if it's not caught in time. Learn more about treatments.
Are we living in a computer simulation?
computer.howstuffworks.com/living-in-computer-simulation.htm
Computer simulations can be very life-like, but so real that we might be living in one? Find out if we are living in a computer simulation.
How High-tech Fabrics Cool You Down When You Heat Up
science.howstuffworks.com/innovation/everyday-innovations/cooling-fabrics.htm
Researchers are constantly developing fabrics that can help keep you cool, whether you're working out or trying to get a good night's sleep. But how do they work, and which are the best ones?
Can You Pass This Basic Astrology Test?
play.howstuffworks.com/quiz/can-you-pass-this-basic-astrology-test
Whether you check your horoscope religiously or turn your nose up at looking to the stars, how much do you know about astrology? Even if you think celestial divination's pure fiction, there are plenty of facts to unpack.