This casebook takes a very broad view of environmental law, encompassing the regulation of private and public land use, protection of wildlife, and pollution control and remediation. It provides sufficient breadth for any introductory environmental or natural resources law course. The text also strikes a balance by focusing in detail on those portions of the statutes that raise particularly interesting or important conceptual issues. Throughout, the authors highlight perpetual controversies, such as the nature of human relationships to nature, and the appropriate extent of individual control over natural resource use. The sixth edition contains problems to help students develop and test their facility with the materials in the text and the concepts underlying those materials. This sixth edition has new chapters on international environmental law issues and on enforcement issues.