Acknowledgements.- The Carbon Dioxide Problem; Mankind Energy Needs and Environmental Pollution.- Industrial Uses of Carbon Dioxide.- Electrochemical Approaches to the Reduction of Carbon Dioxide.- Interactions of CO2 with Transition-Metal Systems, Including Metal Surfaces.- Photosynthetic Electron Transport: the Source of Electrons for CO2 Reduction in Photosynthesis.- Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase (RuBisCO) (Isolation, Structure, and Regulation).- Chlorophyll Function in Plant Photosynthesis and Nonbiological Applications. Isotope Effects in Photoreduction of Carbon Dioxide by Water.- Photo- and Electrochemical Reduction of Carbon Dioxide.- The Enzyme Carbonic Anhydrase.- Evolution of Models for the Structural, Spectroscopic, and Catalytic Properties of Carbonic Anhydrase.- C3 Photosynthesis in Algae: the Importance of Inorganic Carbon Concentrating Mechanisms.- Past and Present: Long Term Changes in Atmospheric CO2 Concentration and Plant Strategies for the Optimisation of Photosynthesis.- Photosynthetic Bacteria.- Carbon Dioxide Reduction by Anaerobic Bacteria.- Stoichiometric Reactions of C-C bond Formation Promoted by Metal Systems.- Catalytic Reactions of Carbon Dioxide with Hydrocarbons.- Fixation and Activation of Carbon Dioxide with Metalloporphyrin.- Copolymerization of Carbon Dioxide and Epoxide.- Electrochemical Syntheses of Carboxylic Acids from Carbon Dioxide.- Supercritical Carbon Dioxide as an Extraction Agent.- List of Short Communications presented at the NATO-ASI Summer School.- List of Participants in the NATO-ASI Summer School.- Conclusions.- Specialists Reports and Suggestions for Future Work.