ISSUES IN SCIENCE AND TECHNOLOGY is a forum for discussion of public policy related to science, engineering, and medicine. This includes policy for science (how we nurture the health of the research enterprise) and science for policy (how we use knowledge more effectively to achieve social goals), with emphasis on the latter. ISSUES is a place where researchers, government officials, business leaders, and others with a stake in public policy can share ideas and offer specific suggestions. ISSUES is published by Arizona State University and the National Academies of Sciences, Engineering, and Medicine.