This publication is concerned with two major current debates in public policy in all affluent societies. One is the widespread concern with the quality of the natural environment-the quality of air, water, land, and wilderness areas-which has expressed itself in the passage and implementation in recent years of a variety of environmental laws and regulations. A second debate concerns the adequacy of energy resources to meet the requirements of a growing economy. The requirement that industries must abate environmental pollution leads to increased costs of production and, in turn, to higher...