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.