Following an opening chapter detailing efforts that led to passage of the Endangered Species Act in in 1973, subsequent chapters focus on efforts to save 7 species: whooping cranes, wolves, bald eagles, giant Galápagos tortoises, California condors, American alligators, and American bison. Each chapter includes the reason(s) the species’ population declined (often multiple factors, including specific types of pollution impacting mortality or ability to reproduce, hunting, and destruction of habitat) as well as information about one or more efforts to bring that animal back from the brink. (The work of the International Crane Foundation in Baraboo is the main focus of the chapter on whooping cranes.) Sidebars throughout provide intriguing tidbits, whether debunking myths about “big bad wolves,” profiling a father/daughter duo who have volunteered to help condors, or providing more information on specific legislation, or kinds of pollution. Color photographs add appeal throughout, while a final “Call to Action” chapter suggests ways to get involved. The ample end matter includes where to go for more information on each of the efforts and animals profiled, a glossary, and index. (Ages 10–14)