In light of new biomedical technologies, such as artificial reproduction, stem cell research, genetic selection and design, the question of what we owe to future persons-and unborn life more generally-is as contested as ever. In A Theory of Unborn Life: From Abortion to Genetic Manipulation, author Anja J. Karnein provides a novel theory that shows how our commitments to persons can help us make sense of our obligations to unborn life. We should treat embryos that will develop into persons in (...) anticipation of these persons. But how viable is this theory? Moreover, what does it mean to treat embryos in anticipation of the future persons they will develop into? Exploring the attractiveness of this approach for Germany and the U.S. - two countries with very different legal approaches to valuing unborn life-Karnein comes to startling conclusions to some of today's greatest ethical and legal debates. (shrink)