Contents in Brief
1
The Environmental Challenges We Face 22
Sustainability and Human Values 26
3
Environmental History, Politics, and Economics 484
Risk Analysis and Environmental Health Hazards 725
How Ecosystems Work 966
Ecosystems and Evolution 1267
Human Population Change and the Environment 1588
Air and Air Pollution 1909
Global Atmospheric Changes 21610
Freshwater Resources and Water Pollution 242