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      Environmental science is the study of both the natural world and the cultural and technological systems that humans create. Among the most important issues in this field are questions of resource equity and intergenerational justice.What kind of world are we leaving for our children? What resources will remain after twenty centuries of our current methods of production and levels of consumption?

      To think critically about these issues, each of us needs some knowledge of scientific principles along with some insights into the social, political, and economic systems that shape the world in which we live. We hope this book will be interesting and informative, as well as an inspiration for you to become active participants in building a better world for the present and future generations.

Part 1 Environmental Science and Ecological Principles
Part 2 Population, Economics, and Environmental Health
Part 3 Food, Land, and Biological Resources
Part 4 Physical Resources
Part 5 Sciety and the Environment