From classbrain.com

Explain It To Me (for Kids)
Workings of War
By ClassBrain Staff
Jul 25, 2011, 7:06pm



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.

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
   
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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