This course focuses on scientific theories, practices, and/or discoveries that have been controversial. How do scientific controversies arise? What intellectual, religious, social, and political factors shape the debate? How do scientific controversies end? By studying historic debates, students learn general methods for analyzing scientific and non-scientific factors that influence the trajectory and outcome of a scientific controversy. Examples to be treated may include Piltdown man, Galileo¿s trial, mass extinction, global warming, Lysenkoism, and meteorites. Affiliate department: Science, Technology and Society.