Reviewing the major cases that have shaped bioethical thinking on life and death, Peter Singer dares what no other philosoper has: namely, challenge society's conventional beliefs about the meaning of life and death. He poses many ethical questions that are raised because of medicine's ability to maintain brain dead bodies functioning at any costs. From the tale of Trisha Marshall whose 'life' was maintained by a respirator for 100 days until she delivered her baby, to the cases of Nancy Cruzan and Anthony Bland, patients in a persistent vegetative state supported by artificial nutrition and hydration, Singer argues that law and medicine have moved to an ethic where 'quality of life' distinctions trump the traditional 'sanctity of life' positions. Throughout this book, Singer presents provocative and challenging views through ethical and historical analysis of brain death, abortion, euthanasia and organ donation, thus providing a deep and textured discussion of the major medical ethics problems that we face.