Explore the intricacies of the Thermal Hall effect of phonons through a comprehensive 44-minute lecture delivered by Leon Balents from the Kavli Institute for Theoretical Physics. Delve into recent developments in the interplay between topology, symmetry, and interactions in condensed matter physics. Examine the anomalous Hall effect, thermal Hall effect, phonon Hall viscosity, and energy magnetization. Learn about the kinetic equation approach and its application to understanding these phenomena. Investigate the role of gravitational fields in the context of the Thermal Hall effect. Gain insights into the broader implications for strongly correlated systems, topological insulators, and other cutting-edge topics in quantum materials research.