3Ever wanted to take apart the microwave to see how it works? Crack open your computer and peek inside? Intrigued by how things work? So are we! That's why we're dissecting all kinds of things from rubber erasers to tractor beams! Read along as National Geographic Kids unplugs, unravels, and reveals how things do what they do. Complete with "Tales from the Lab," true stories, biographies of real scientists and engineers, exciting diagrams and illustrations, accessible explanations, trivia, and fun features, this cool book explains it all!