1. Visions of the Future 2. The Economic Approach: Property Rights, Externalities, and Environmental Problems 3. Evaluating Trade-Offs: Benefit-Cost Analysis and Other Decision-Making Metrics 4. Valuing the Environment: Methods 5. Dynamic Efficiency and Sustainable Development 6. Depletable Resource Allocation: The Role of Longer Time Horizons, Substitutes, and Extraction Cost 7. Energy: The Transition from Depletable to Renewable Resources 8. Recyclable Resources: Minerals, Paper, Bottles, and E-Waste 9. Water: A Confluence of Renewable and Depletable Resources 10. A Locationally Fixed, Multipurpose Resource: Land 11. Storable, Renewable Resources: Forests 12. Common-Pool Resources: Commercially Valuable Fisheries 13. Ecosystem Goods and Services: Nature's Threatened Bounty 14. Economics of Pollution Control: An Overview 15. Stationary-Source Local and Regional Air Pollution 16. Climate Change 17. Mobile-Source Air Pollution 18. Water Pollution 19. Toxic Substances and Environmental Justice 20. The Quest for Sustainable Development 21. Visions of the Future Revisited