The Critical Challenge. Humans and Earth: The Great Experiment. Global Cycles and Systems: The Environmental Framework. Ecosystems and the Bioclimatic Environment. Human Population: Trends and Patterns. Agriculture, Food Production, and Hunger. Energy Generation, Use, and the Environment. Atmospheric Environment and Land Use.

Air Pollution: Patterns, Trends, and Impacts. Hydrologic Environment and Land Use. Water Pollution: Patterns, Trends, and Impacts. Hazardous Waste Production and Disposal. Soil, Land, and Land Use. Biological Diversity and Land Use. Open-Land Resources: Forests, Rangelands, Parks, and Preserves. Managing the Environment.

Appendix. Glossary. Index.