This paper explores the convergence of two recent and growing streams of bioethical work and concern. Each has originated independently, but each arises from the fact that the Common Rule that has shaped medical research ethics, as institutionalized in the United States and also abroad, is largely silent about what needs to be done in response to researchers’ positive obligations. One stream concerns what to do about the sometimes vast range of findings that may arise incidentally to performing research procedures. (...) The other asks whether medical researchers owe their study participants any “ancillary care” — that is, medical care that their study participants need but that goes beyond what is required to do the science safely. (shrink)