Includes bibliographical references (pages 677-679) and index.

Scientists predict that the environment over the next 100 years will be threatened by severe challenges--the loss of biodiversity, expected changes in world-wide climate, and decreasing amounts of arable land and potable water for an exploding human population. All of these will greatly impact how the earth will be able to support life in the future. And at the center of these global environmental changes are developments in land use. Over the last 300 years, and in particular the last 50 years, the earth's land has been altered drastically as a result of increasing industrialization and urbanization worldwide, as well as by changes in agricultural techniques in lands under cultivation. These developments raise troubling questions about out future: How will these changes affect the sustainability of certain types of land use? How will they impinge upon critical regions, like rainforests and deserts? Will the earth be able to provide for the basic human needs of food, shelter, and water?

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