This session will focus on the dissolution and degradation of glasses and glass-ceramics in aqueous environments, covering both the intermediate role of interfacial reactions between aqueous environments and glasses, including hydrolysis reactions, cation interdiffusion, and incorporation of water into the glass matrix; condensation and precipitation reactions; and longer time frame aspects of glass dissolution. Studies focusing on glass surface and water reaction mechanisms and interfacial structures and transport behaviors using either computational or experimental methodologies are particularly encouraged. Elucidation of the mechanisms and kinetics of glass degradation in studies conducted under various conditions are also welcomed, for example, those that investigate the influence of solution composition, temperature, glass composition, reactive surface area, gel layers, secondary phases, environmental materials, and radiation on glass dissolution.