Front Matter -- PREFACE -- CONTENTS -- EXECUTIVE SUMMARY -- Chapter 1 The Rise of Advisory Systems for Science and Technology -- Chapter 2 Elements of Science Advice -- Chapter 3 UN Sustainable Development Activities and Their Science Advisory Processes -- Chapter 4 Structure of Science Advice in the United Nations System Today -- Chapter 5 Findings and Recommendations -- REFERENCES -- ACRONYMS -- APPENDIX I: THE UNITED NATIONS SYSTEM -- APPENDIX II: Procedures for the Preparation, Review, Acceptance, Adoption, Approval, and Publication of IPCC Reports -- APPENDIX III: Modus Operandi of the Subsidiary Body on Scientific, Technical and Technological Advice of the Convention on Biological Diversity -- APPENDIX IV: Draft Resolution on the Modus Operandi of the Scientific and Technical Review Panel (STRP) of the Ramsar Convention on Wetlands -- APPENDIX V: Rules of Procedure of the InterAcademy Council -- APPENDIX VI: Procedures for the Production and Review of Proactive Academy Reports and Statements of the Royal Academy of Engineering -- APPENDIX VII: Study Procedures of the International Council of Academies of Engineering and Technological Sciences.