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11 Inventions That Changed the World as We Know It

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Inventing a useful product or process is serious business - turn a great idea into a marketable widget, and you could earn millions of dollars. But that doesn't mean your widget has to be straitlaced and conservative.

How Anger Works

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We've all felt fury wash over us. Whether it's the guy who blurts the score to the game you TiVo'ed or the woman who lets the door slam in your face, anger is universal. You might as well learn how it works.

Causes of Insomnia

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The causes of insomnia are as numerous as the forms it takes. Learn how to combat insomnia arising from medical conditions, jet lag and other causes.

What can your spit tell you about your DNA?

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Doctors always want your blood, but one day, a health care professional may ask you to open up and say, "Ptooey!" Why? Your spit holds a mother lode of biological information.

10 Myths About Surviving a Tornado

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Separating fact from fiction when it comes to tornado safety could mean the difference between life and death.

How Antidepressants Work

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Antidepressants are one of the leading classes of medical prescription medications. Read about antidepressants and find out how antidepressants work.

How Biodegradation Additives Work

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Plastic's handy, hardy stuff, but we don't want to leave piles of old forks and water bottles for future generations to trip over. Can special additives that break down plastics faster save the day?

Antioxidants: What You Need to Know

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Antioxidants are believes to lower the risk of cancer, heart disease, and memory loss. Learn about antioxidants and truths about antioxidants.

How Scleral Tattoos Work

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What is a scleral tattoo? Learn more about scleral tattoos at HowStuffWorks.

The Epic History of Werewolves

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Werewolves are popular creatures in folklore where a man changes into a wolf. Learn more about werewolves and find out where werewolves originated.

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