This seminar focuses on protection of at-risk species under the Endangered Species Act (ESA) and introduces the related topics of ecosystem management and biodiversity conservation. After an introductory overview of these topics, the first segment of the seminar provides a thorough survey of the ESA programs for designating endangered species, developing recovery plans for them, controlling federal agency actions that may affect listed species, restricting other activities that may "take" such species, and administering the different permitting programs applicable to federal and state/local/private actions. After that, the seminar explores current and cutting edge issues of ESA law in specific settings. Where possible, outside speakers may address these topics with the students in an informal, open-ended setting for part or all of a class period. Enrollment limited.