This class, which I co-teach with Prof. Sally Pusede, focuses on interactions between biota (plants and soil microbes) and the lower atmosphere.  The class focuses on chemical and physiological aspects of these interactions, rather on physical transport.  We draw the readings from the primary and secondary literature, and discussion figures heavily in the class.  The class concentrates on those chemicals in the atmosphere that are either produced or consumed by plants and/or that have concentrations dependent upon biogenic products.