Nearly 100,000 Americans are waiting for organ transplants. Many will die while they wait. The shortage of organs has led some to suggest that we should pay living donors for their organs. A recent study by University of Pennsylvania professor Scott Halpern in the Annals of Internal Medicine explores this very idea and questions some of the ethical arguments against creating a regulated organ market. This hour, bioethicists Scott Halpern of the University of Pennsylvania and David Magnus of Stanford University discuss legalizing the sale of organs.