The success of Scottish scientists in cloning a sheep has stirred widespread fears about genetic engineering: Will biologists be cloning made-to-order humans next? Fox seeks not to allay but to refocus these anxieties, directing our concern away from a hypothetical future toward a troubling current reality: a mammoth bioengineering industry already recklessly manipulating the genetic codes of numerous plant and animal species without regard for the ethical or ecological implications of their acts. Breaking ranks with scientists who view biotechnology with ebullient confidence, Fox poses the hard questions: What are the hidden dangers of transplanting genes from one species to another? What suffering do animals experience when subjected to genetic engineering--and can such suffering be justified? What happens to the natural dynamics of evolution when genetically altered species are released into the environment?