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Why Do They Call It Black Friday? The term Black Friday was first used to describe Sept. 24, 1869, when several financiers tried to corner the gold market.
Can Turkeys Fly? Wild turkeys feed on the ground, which may have something to do with the myth that they can't fly.
Who Invented the TV Dinner? Today, more than one-third of U.S. homes have a separate freezer in addition to the one that's part of the fridge, allowing for storage of plenty of TV dinners to gobble on demand. Who came up with the idea is not so clear.
Why Don't Penguin Feet Freeze on Ice? Actually, bare feet prevent these stately ice emperors from burning up in their suits.
Can Fright Turn Hair Suddenly White? For centuries, it has been widely believed that fright or dread can turn hair white. It's said Marie Antoinette's hair turned white the night before her execution.
What Causes a Charlie Horse? Expect cramps during states of exercise and dehydration.
What Causes Hunger Pangs? Hunger speaks not from the belly but from the brain.
Do People Really Die of Old Age? No one dies of old age.
Why is Yawning Contagious? Some current theories focus on yawning as a social cue (like laughing) that communicates information and helps organize group behavior.
What's the Significance of 11/11? Some people feel haunted by the number everywhere they go, claiming it's a nod from angels or a mystical sign of eleven's importance in math and science.
Do Tornados Strike Outside the United States? Tornadoes are a worldwide phenomenon, touching down in every continent save Antarctica.
What is Amnesia? Amnesia can occur as a result of head trauma, drug toxicity, stroke, Alzheimer disease, infection or even emotional shock.
How Does a One-way Mirror Work? The mirror used in your favorite detective scene has a thin layer of partially reflective coating.
Do I Really Have to Wait an Hour After Eating Before Swimming? Moms impart many nuggets of homespun wisdom. This is probably not one of them.
Why Do We Blush? Blushing is a uniquely human response to unwanted social attention.
Why Do We Have an Adam's Apple? Contrary to popular belief, both males and females have Adam's Apples, a chunk of bony cartilage that's wrapped around the larynx.
Why is Fecal Matter Brown? The end product of the digestive process and the secret of its chief visual property.
Why is Hair Parted? The function of body and head hair, and why it grows the way it does.
Why Do We Carve Pumpkins at Halloween?
Are Left-Handed People Smarter? Psychologists are far from a consensus on how to measure vague concepts like creativity and intelligence.
How Does a Microwave Oven Work? The frozen burrito in your microwave oven sits in an electromagnetic field, bombarded on all sides by high-frequency microwaves.
How Do Cats Purr? Scientists are still puzzled over the exact mechanism of purring.
Why Do My Eyes Close When I Sneeze? Ah, the illusive achoo -- there's much mystery surrounding our sternutation reflex, a.k.a. the sneeze.
What Causes a Fever? The brain responds to sickness by knocking the thermostat up a few notches to stimulate production of disease-fighting antibodies.
Why Do Golf Balls Have Dimples? Nearly a century ago, after someone realized that a scuffed-up ball travels farther than a shiny new one, balls gained dimples.
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