Like its predecessor, New Dimensions in Bioethics, this volume developed out of a series of lectures at Yale University s Institution for Social and Policy Studies. Each speaker in the Bioethics & Public Policy Seminar Series was invited because of her or his expertise in a given area of bioethics. Each of the more successful participants was invited to contribute a manuscript for publication. The essays are bound together by the application of an ethical analysis to scientific questions, and by consideration of policy implications. At its inception, bioethics was virtually synonymous with...