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How do fireworks get their glorious colors?Each firework is packed with just the right mix of chemicals to create colorful lights.
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What Is Kosher Food? -
Why Does Mona Lisa's Smile Change?Among the top questions baffling art enthusiasts is the elusive grin. Did da Vinci intentionally create the ambiguous appearance?
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Why Do People Snore?Why do people snore? Vibrating throat muscles are responsible for snoring.
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What are freckles?Those little brown spots adorning your body are merely patches of pigment, called melanin.
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Why Do People Blush?Blushing is a uniquely human response to unwanted social attention.
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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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How Does a One-way Mirror Work?The mirror used in your favorite detective scene has a thin layer of partially reflective coating.
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How Do Cats Purr?Scientists are still puzzled over the exact mechanism of purring.
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How Did the Hawaiian Islands Form? -
Do Your Pets Notice the Switch From Daylight Saving Time?When we set our clocks back an hour this weekend, will our pets notice the new schedule?
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Is Cannibalism Becoming More Popular?Despite a few news reports of cannibalism in Europe, experts say the practice is as taboo as ever.
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How Big Is the Mississippi River Flood?This year's Mississippi River floods could set all-time records.
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Tree Frogs Provide New Answers to Amazon Diversity PuzzleWhy some places have more species than others.
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Does Circumcision Have Health Benefits?A group in San Francisco aims to ban circumcisions in that city.
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Computers and Neurons Unite: Scientists Deepen Understanding of BrainBy encouraging biological nerves to grow into silicon tubes, scientists have created a cyborg hybrid that paves the way for the melding of man and machine.
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New Bomb-Detecting Ink Could Thwart Terrorists -
Are Pets Affected By Daylight Saving Time?Pets' schedules consist of eating and sleeping, so it seems hard to believe a little change in time could put them off-kilter.
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Mercury Thermometers Are Going Extinct. What Will Replace Them?You may not have used a mercury thermometer in years, but they're still popular in industry. Now that the government is phasing them out, what will replace the old standard?
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Will Asteroid Apophis Hit Earth in 2036? NASA Rejects Russian ReportAn asteroid named Apophis is heading toward Earth with a reported estimated collision of 2036. Life's Little Mysteries answers the question: How scared should we be?
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Whale-Watching Season in Full Swing Off Calif. CoastGray whales are heading to their wintering ground off Baja California.
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Slithering Robots Learn to Stand on Their Own Four Feet
Robots that evolved from crawling babies into upright adults could help pave the way for better bots.
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How Do Brain Injuries like Gabrielle Giffords' Heal?
How does the brain patch itself up and regain function after a gunshot injury?
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Is Suspected Wikileaks Source's Solitary Confinement Torture?
