This course trains future environmental managers regarding human-driven disturbances to biogeochemical cycling of carbon, nitrogen, phosphorus, sulfur, and trace elements in relationship to greenhouse gas-driven climate change, ocean acidification, stratospheric ozone depletion, acid rain, acid mine drainage, air/water/soil pollution, and human and ecological health, among other issues. Additional topics include persistent organic pollutants, pesticides, emerging contaminants, microplastics and other chemicals. The course covers basic principles with applications to environmental problems, human and ecological toxicological implications, and available technical and policy solutions including potential unintended consequences.