This exchange will be a joint effort from Tim Barnes and Rich Neale. Both residents of nearby Lafayette. Tim is a councillor (mayor pro tem) and Rich is the chair of the city’s Sustainability and Resilience Advisory Board (SRAB). We hope to give you a sense of how issues of earth system change are viewed at the city scale, how that relates to the much larger scale activities in CGD and how cities are actually quite serious about taking real action, even within the occasional legislative constraints of local government machinery.