HOW DO YOU BUILD A SKYSCRAPER? WHY DO SATELLITES ORBIT THE EARTH? WHAT MAKES A PLANE FLY? From jet engines and space rockets to cell phones and robots, discover how the world's greatest inventions really work. Find out how dams, bridges, and skyscrapers are built and uncover how submersibles, drones, and simulators have pushed the limits of our technology. Ages 6+
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