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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 Stress Works

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Understanding stress requires you to learn the various types of stress and the different causes. Learn how stress affects you and how to relieve it.

How to Choose Clothes for a Child

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Knowing how to choose clothes for a child means balancing ease and comfort with price. Learn about diapering and how to buy baby clothes.

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.

How Hulu Works

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Hulu lets you watch TV shows and movies online for free. So what's the catch? Is there a catch? See how Hulu works and Hulu's challenges.

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.

Early unmanned aerial vehicles (UAVs) primarily carried out reconnaissance missions in war zones, but the Reaper packs some serious heat. Is there anything more foreboding than a drone with a Hellfire missile?

How Bridges Work

science.howstuffworks.com/engineering/civil/bridge.htm

Bridges support tremendous weight, span huge distances and all the while withstand the greatest forces of nature. Find out about these engineering feats (as well as some of the flaws).

How Catering Works

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Catering is an efficient method of providing food for large parties. Find out the steps involved in catering an event and how to start a career in catering.

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