Trivia and fun facts illustrate engineering ingenuity and achievements from ancient aqueducts to the Suez Canal and the Hoover Dam. Includes activities and projects to encourage children to explore the engineering process.

"The 21st Century Junior Library Extraordinary Engineering series explains how important feats of engineering are accomplished. Dams examines the engineering concepts that make these critical structures possible. Sidebars encourage readers to engage in the material by asking deeper questions or conducting individual research. An activity, full color photos, a glossary, and a listing of additional resources all enhance the learning experience"--