When a school science project has her stymied, Shakira starts to wonder where inventors - like Thomas Edison - got their inspiration. Sam and Jen take the urban teen on a thrilling adventure through the ages to see how inventions are born and have the potential to significantly alter the course of history. If it hadn't been for the invention of the primitive "wheel," the locomotive wouldn't have been invented. Shakira figures, maybe when you get right down to it, the greatest inventor of all time wasn't actually Edison - maybe, just maybe, it was the caveman.

Originally released by Chip Taylor Communications, 2005. Streaming video file encoded with permission for digital streaming by Infobase on October 13, 2014.

History of Inventions (2:19); --Inventing the Wheel (5:39); -- Locomotive (6:03); -- Modern Transportation (2:35); -- Water Wheels (7:13);.