Carl F. Cranor is Professor of Philosophy at the University of California, Riverside. His work focuses on issues that arise in the legal and scientific adjudication of risks from toxic substances and from the new genetic technologies. He has published numerous articles in these fields as well as authoring Regulating Toxic Substances: A Philosophy of Science and the Law (1993), editing Are Genes Us? The Social Consequences of the New Genetics (1994) and co-authoring the US Congress' Office of Technology Assessment report, Identifying and Regulating Carcinogens (1987). His articles have appeared...