Our ability to alter the course of human development ranks among the most significant changes in modern science. But even if we can do such things, should we? Under what conditions should certain procedures be permitted or forbidden? Do we want to support the research that might make such procedures possible? This book presents enough science so readers can make an informed analysis of the issues consistent with their ethical views.This book is available on its own and packaged with other W.H. Freeman titles. If you are interested in packaging it, please contact your local W.H. Freeman Representative.