Bioethics needs an expanded moral vision. Born in the ferment of the 1970s, the field responded to rapid developments in biomedical technology and injustices in clinical care and research. Since then, bioethics has predominantly focused on respect for autonomy, beneficence and nonmaleficence, and the zero-sum "lifeboat" ethics of distributive justice, applying these principles almost exclusively within the walls of medical institutions. It is now...