Vehicles and transportation are fertile ground for the imagination, and they are also a fantastic gateway to the physical sciences. Explorers: Things that Go uses a series of eye-catching story scenes to set the stage for a wide-ranging examination of the science behind motion. From the speed of racing, to transport on the rails, the science of heavy machinery, the physics of flight, and what keeps boats afloat. After readers absorb the elements of each story, they can explore the details through photographs and explanations on the following page. If they are interested in a particular aspect of transportation they can hop through the book following one of four icons related to their interest. Back matter offers plenty of resources for further multimedia exploration.