Contents: Part 1: Climate Change (CC) Issues: CC Science; Sources of GHG Emissions, and Removals from the Atmosphere; Projections of Greenhouse Gas (GG)-Induced CC; Potential Impacts of Projected CC; Proposed GG Concent. Targets; Program Design and the Costs of GHG Mitigation; Benefits of Mitigating CC; Importance of the Dist. of Losses (or Gains); Part 2: Internat. and Domestic Policy Fields; Status of Internat. Coop. on CC; Domestic Policy on CC; Part 3: The Policy Tool Box; Regulatory and Market Tools to Reduce GG; Market Facilitation Tools; Tools to Stimulate Technological Change; Options to Ease the Economic Transition; Internat. Policy Tools; Tools to Stimulate Adaptation to CC; Choices Ahead for Policy-Makers.