The Invention Hunters travel the globe in their flying museum collecting the world's greatest inventions! This time, they've landed at an elementary school's science lab, and these silly scientists think they've collected incredible specimens of banjos, flowerpots, and even a yeti's tooth. But what they really discover — with a kid as their guide — is how prisms, magnifying glasses, cameras, and TV screens use light to work! Using simple explanations and diagrams, and a heaping helping of humor, the Invention Hunters make the perfect companions for curious kids who are ready to learn about science, physics, engineering, history, and more.