From classbrain.com
Explain it to me...
Workings of War
By ClassBrain Staff
Jul 20, 2006, 3:00pm
Since the Middle Ages, engineers have engaged in a battle for the sky. Read about the skyscrapers fight against gravity, how they stay standing and see how the wind affects these mighty buildings.
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How the U.S. draft works – If you have ever wondered if anybody you know could be drafted, read about who qualifies, registration and special classifications here.
Source: HowStuffWorks.com
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How night vision works – Are you seeing red? Find out how night vision works, when it’s used and why it is so important to today’s world.
Source: HowStuffWorks.com
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