This text addresses the host of ethical questions that has arisen recently in response to the development of new reproductive technologies. * Addresses the ethical questions which have arisen in response to new reproductive technologies. * Helps students of theology, philosophy and health studies, as well as lay readers tackle these issues. * Provides readers with relevant medical and scientific facts. * Explains how different metaphysical frameworks affect the ways in which people solve these ethical problems. * Topics covered include human embryo and embryonic cell stem research, infertility and its treatments, and prenatal screening and diagnosis. * The author takes a balanced approach, acknowledging his loyalty to Catholicism, yet exploring freely the new options provided by advancing biological science.