Focusing on the E segment of STEAM learning, this picture book introduces readers up to 7 to different sorts of engineers—the inventors, designers, and builders of our world. Mechanical engineers devise machines and mechanical systems. Civil engineers build complex structures like bridges, tunnels, and dams. Electrical engineers create power systems that transmit electricity. You'll also meet electronic, computer, chemical, systems, aeronautical, and astronautical engineers, and get a sense of what they all do. Here too are vocabulary words and profiles of famous engineers.