Bruce Lewenstein (A.B., general studies in the humanities, 1980, University of Chicago; Ph.D., history and sociology of science, 1987, University of Pennsylvania) is Professor of Science Communication and chair of the Department of Science & Technology Studies at Cornell University. He is also a full member of the Department of Communication. He works primarily on the history of public communication of science, with excursions into other areas of science communication (such as informal science education). He has been an active evaluator of informal science education projects, especially in areas of “citizen science.” Dr. Lewenstein also has been active in international activities that contribute to education and research on public communication of science and technology, especially in the developing world. In general, he tries to document the ways that public communication is fundamental to the process of producing reliable knowledge about the natural world.