"Is there anything left to discover or invent?" Not only is the world full of ingenious inventions - many of them were invented by kids! Zoey meets the next generation of Einsteins, to find out what they're inventing or discovering. We learn about things invented and discovered by kids, the difference between a discovery and an invention, Archimedes' discovery of the principle of displacement, and useful science fair projects. Astronaut Chris Hadfield says there's lots more to discover, and we need young scientists to find solutions for our many problems. .