This Report of the Study of Critical Environmental Problems (SCEP) presents the results of a one-month, interdisciplinary examination of the global climatic and ecological effects of man's activities. The focus was on those environmental problems whose cumulative effects on ecological systems are so large and prevalent that they have worldwide significance. Thus the Study was primarily concerned with the effects of pollution on man through changes in climate, ocean ecology, and large terrestrial ecosystems.

Includes index. Sponsored by the Massachusetts Institute of Technology. Held to make preliminary studies for the 1972 United Nations Conference on the Human Environment.