The Endangered Species Act of 1973 (ESA) is a critical piece of legislation related to the conservation of threatened and endangered species and their ecosystems. This interactive lesson, created in collaboration with the Texas Wildlife Association, provides historical context, a step-by-step look at the listing process, details on how this legislation impacts private landowners, and resources and opportunities for Texans. Each photo throughout the publication features a species that is threatened, endangered, or in decline in the state of Texas.