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THE MACHINERY OF NATURE. (1986) Paul R. Ehrlich. America's most popular ecologist leads us on a delightful nature tour around the globe, lucidly introducing us to the fascinating science of ecology. With characteristic grace, simplicity, and authority, Paul Ehrlich explains what ecology is, and illuminates the origins, evolution, and behavior of living things, emphasizing their delicate interactions within ecosystems. 320 pages, soft cover.