Preface -- Acknowledgments -- Contents -- Summary -- 1 Introduction -- 2 Restructuring the Climate Change Science Program -- 3 Future Priorities -- References -- Appendix A: Examples of Bills with a Significant Climate Change Component Considered in the 110th Congress -- Appendix B: U.S. Climate Change Science Program -- Appendix C: Process for Identifying Priority Areas -- Appendix D: Fundamental Research Priorities to Improve the Understanding of Human Dimensions of Climate Change -- Appendix E: Research Priorities for Improving Our Understanding of the Natural Climate System and Climate Change -- Appendix F: Workshop Agendas and Participants -- Appendix G: Biographical Sketches of Committee Members -- Appendix H: Acronyms and Abbreviations.