Since its inception in 1968, the brain-death criterion for human death has enjoyed the status of one of the few relatively well-settled issues in bioethics. However, over the last fifteen years or so, a growing number of experts in medicine, philosophy, and religion have come to regard brain death as an untenable criterion for the determination of death. Given that the debate about brain death has occupied a relatively small group of professionals, few are aware that brain death fails to correspond to any coherent biological or philosophical conception of death. This is significant, for if...