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How Fuel Cells Work

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A hydrogen fuel cell is an electrochemical energy conversion device. Learn why governments are pouring money into fuel cell research.

How Chicken Pox Works

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From Beijing to Boston, chicken pox has plagued millions of children and adults. See how chicken pox works.

How to Clean Up Home Energy Consumption

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Periodic cleaning and regular maintenance is the best way to improve efficiency in your home energy consumption. Learn about home energy efficiency.

How Female Puberty Works

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Female puberty marks a tough transition to adulthood. From body development, periods and hormonal mood changes, learn what to expect in female puberty.

How State Troopers Work

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State troopers are associated with highway patrol, but their duties extend past the asphalt. Read about state troopers and state trooper investigations.

How Samurai Work

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The legend of the samurai continues to permeate our culture, with countless movies and TV shows dedicated to the subject. How much of what we know about the samurai is truth and how much is myth?

How Hurricanes Work

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How often have you watched a weather forecaster point to a spiral-shaped cloudy mass with a sense of dread and fascination? What fuels these ferocious storms?

Have you seen investigators on crime shows who spray some stuff on a "clean" carpet and suddenly -- blood stains! Well, of all the fictional technology on TV, it turns out this stuff is real! Find out how luminol reveals the blood.