Where is biotechnology taking us? What might life be like in a world in which we can try to satisfy our desires for better children, superior performance, ageless bodies, and happy souls with the aid of powerful biotechnologies? How shall we use our growing powers to screen genes, select the sex of children, enhance athletic performance, alter memory, mood, and behavior, retard senescence, or prolong the human lifespan? These issues are explored in a searching and provocative report just released by the President’s Council on Bioethics, the first attempt of any public bioethics commission to address the large questions of our human--or perhaps "post-human"--future in an age of biotechnology.