The surface of the Great Lakes covers 94,250 square miles (244,106 sq km). About 40 million people in the United States and Canada drink water from the Great Lakes, and millions of birds, fish, and other animals make their homes there. Much will be lost if the lakes arent protected. Readers are introduced to Great Lakes conservation issues, including climate change, mining, and water quality. Full-color images and detailed sidebars accompany main content consistent with the social studies curriculum. The knowledge readers gain is sure to inspire the next generation of environmental warriors needed to save this precious ecosystem.