Abigail Agresta specializes in medieval European and Mediterranean history, with an emphasis on environmental history, urban history, and history of public health. Her current book project, God, Humans, and Nature in Late Medieval Valencia, investigates how the rulers of a religiously mixed society--the city of Valencia, Spain--understood the relationship between God, human beings, and the natural world. The book shows that the city government moved from a fairly technocratic approach to environmental crisis in the late fourteenth century to a primarily religious one by the mid-fifteenth, and that this shift reflected the city's changing relationship with its own Christianity and its crusading past. Dr. Agresta has taught courses on medieval urban history, religious history, and history of medicine. Prior to joining the faculty at George Washington, she was a postdoctoral fellow in the Department of History at Queen's University in Kingston, Ontario.