Did you know that hydropower supplies 16 percent of all electricity worldwide? And there are more than 57,000 big dams around the world Canals and Dams With 25 Science Projects for Kids invites kids ages 7 though 10 to investigate the waterways that help the world run Through fun facts and engaging content, readers explore record-breaking structures such as the Panama Canal and Hoover Dam. They also learn about the physics that make canals...