Pocket Genius: Inventions: Facts at Your FingertipsDiscover the fascinating world of inventions and technology. From the first tools to the latest gadgets, Pocket Genius: Inventions showcases key inventors and inventions that changed the world from air, space, water, and land transportation to everyday objects in the home, medical tools and aids, plus telescopes, roller coasters, satellites, and robots, and a look at future technologies. Redesigned in paperback, DK's best selling Pocket Genius series