Sulfur Cycle: Water Quality and Biogeochemistry

This lecture covers the sulfur cycle, detailing the largest reservoirs of sulfur in the Earth's crust and oceans, the biotic and abiotic processes involved, key sulfur compounds and their redox states, biological sulfur cycle, human impacts on the sulfur cycle, and the role of DMS in cloud formation. It also discusses the atmospheric sources of sulfur, the impact of sulfur on soils and water, and the comparison between modern and ancient atmospheres to understand the importance of global cycles on Earth's life.