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Home Energy-Saving Systems

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When you work on your home to make it more energy efficient and less expensive to maintain, you must also consider safety issues. Learn more.

How Hereditary Illnesses Work

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Hereditary illnesses can be frightening to new parents, but they are usually rare. Learn about various genetic diseases and their causes.

Inside '300'

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Centuries after an army of 300 Spartan warriors held off 100,000 Persian invaders, the story has been realized on screen as '300.' Go behind the scenes.

Ultimate Guide to Elmo

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Elmo, the furry red Muppet on 'Sesame Street,' is the most recognized children's character in the United States. Read this in-depth look at Elmo.

How Bonsai Works

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Bonsai is an ancient form of gardening that many consider to be art. Learn more about bonsai and the rich history that comes with it.

How Gold Works

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We love it. We wear it glittering around our necks and sparkling at our ears, wrists and feet. We pass it down to our children and hoard it in secret stashes. Why is this precious metal so prized?

1970-1979 Ford Trucks

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The Courier and Louisville Line were Ford's new 1970-1979 trucks. Learn more about Ford trucks in the 1970s and see truck photos at HowStuffWorks.

How Virtual Reality Works

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Virtual reality uses a computer to create a simulated three-dimensional world. Find out how virtual reality works and learn about the future of virtual reality.

How Meth Works

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Meth, or methamphetamine, is a stimulant that can leave users toothless and paranoid. So why do so many people go after that high? Learn what meth can do.

Imagine walking through a field and stumbling upon scads of corpses, all in various states of decomposition. It's not the setting for your next nightmare, but rather a very real discipline of forensic anthropology.

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