Preface -- Acknowledgments -- PART 1. MICROCOSMS: CONCEPTS AND USES: Chapter 1. Introduction to microcosmology. Chapter 2. Metabolism and homeostatis. Chapter 3. Succession and self- organization. Chapter 4. Chemical cycles and limiting factors. Chapter 5. Diversity and information. Chapter 6. Hierarchy, control, and oscillation. Chapter 7. Stress, toxicity, and adaptation. Chapter 8. History -- PART 2. KINDS OF MICROCOSMS AND MESOCOSMS: Chapter 9. Aquaria. Chapter 10. Stream microcosms. Chapter 11. Terraria and soil microcosms. Chapter 12. Wetland microcosms. Chapter 13. Ponds and pools. Chapter 14. Reefs and benthic microcosms. Chapter 15. Plankton columns. Chapter 16. Thermal and brine microcosms -- PART 3. MICROCOSMS FOR SOCIETY: Chapter 17. Food microcosms and mesocosms. Chapter 18. Waste microcosms and mesocosms. Chapter 19. Human microcosms and space. Chapter 20. Microcosm perspectives -- APPENDICES: A. Directions for classroom microcosms. B. Directions for monitoring microcosms. C. Experiments on the closed ecological system in the biosphere 2 test module: A. Alling, M. Nelson, L. Leigh, T. MacCallum, N. Alvarez-Romo, J. Allen, and R. Frye -- BIBLIOGRAPHY -- INDEX.