Color photos and diagrams illustrate this text for undergraduate students with little or no science background. Material is divided into five sections on environmental science and ecological principles; population, economics, and environmental health; food, land, and biological resources; physical resources; and society and the environment, emphasizing the global environment, a holistic approach, and sustainable development. This third edition contains new boxes on current topics including electromagnetic fields and biotechnology. Annotation c. by Book News, Inc. , Portland, Or.