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How the NSA Works

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Do you know how the NSA works? Find out how the NSA works at HowStuffWorks.

Thousands of satellites fly overhead every day, helping us with things like weather forecasts, scientific research, communications, TV broadcasts (and maybe some surreptitious spying). How much do you know about these eyes in the sky?

How X-rays Work

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X-ray machines seem to do the impossible: They see straight through clothing, flesh and even metal, thanks to some very cool scientific principles at work. Find out how X-ray machines see straight to your bones.

How Terraforming Mars Will Work

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The thought of terraforming Mars is one of those ideas so outrageous that it just might work! Learn how it will work!

How Alternative Energy Mutual Funds Work

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Alternative energy mutual funds may be the answer to paying for the creation of alternative energy. Read more about alternative energy mutual funds.

Do wind turbines kill birds?

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While some wind turbines kill birds, newer models are being built to reduce bird mortality. Learn why some wind turbines kill birds.

How GenForum Works

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GenForum is a social networking site that has become very popular. Learn all about GenForum at HowStuffWorks.

What Is a Wolfpack Mentality?

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"How To Train Your Dragon," "What We Do in the Shadows" and tons of other movies include references to wolf packs. Learn how those actually work in the real world.