Description: Did you know that every time you use your credit card that the clerk is bouncing a signal off a satellite to okay your purchase (or not). Have you ever wondered just why the plane you're sitting in stays in the air? Do you know where all those stairs on the escalator go when they get to the top? Well, no lesser authority than Scientific American will show and tell you in How Things Work Today. Here, you'll discover the secrets of the way the world works in detailed, three-dimensional illustrations and up-to-the-minute photographs, each annotated in language that you can understand. Divided into categories that you can easily recognize -- The Home, The Office, Transportation, Communication, Medical Technology, Food and Drink and many more -- you'll finally know just how complex and wondrous your world really is.

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