The Panama Canal is only about 40 miles long, but this narrow channel connects the Atlantic and Pacific Oceans. It saves ocean vessels from going around South America, which would otherwise be a 9,000-mile journey. Readers will learn about the canal's creation, how the United States became involved, and about the 40,000 people who worked on it over 10 years. They'll especially appreciate the amazing photographs of construction from the early 1900s as well as fact boxes that delve more deeply into the details of how the canal functions.