 degree in Geography from the University of Chicago and a Ph.D. in Evolutionary Biology and Ecology from Washington University in St. Louis.Zimmerman has worked mostly on plant-animal interactions, in particular when associated with pollination, and has been elected a fellow of the American Association for the Advancement of Science.He has an interest in science literacy in general, and, more specifically, in the creation–evolution controversy, and organized the Clergy Letter Project and Evolution Sunday.