Recent advances in the fields of science and medicine can and do pose problems to ethicists. Genetic engineering is among the most promising yet difficult areas facing ethical thinkers today. This topic concerns not only scientists and ethicist but everyone. Thomas Shannon provides a helpful overview of the ethical problems in genetic engineering as part of the popular What Are They Saying About series. Topics surveyed include: (a) the meaning and significance of nature; (b) the role of technology; (c) images of the human; (d) responsibility to future generations; (e) recombinant DNA research; (f) birth technology; (g) gene therapy. The various questions raised by these topics are presented as well as an ethical analysis of these problems.