The articles in this issue cover a wide range of topics, including the moral status of human embryos and human-animal chimeras and hybrids, the determination of death, theories of human cognition, and policies on the identity of mitochondrial donors. Despite this variety, there are two underlying questions that tie the articles together: what is a human being? And, what is the basis of moral status? First, I discuss these two questions and why they are important for bioethics. Then I provide (...) summaries of the six articles in this issue and explain how each of them is connected to the questions of human nature and moral status. (shrink)

The possibility of consciousness in human brain organoids is sometimes viewed as determinative in terms of the moral status such entities possess, and, in turn, in terms of the research protections such entities are due. This commonsense view aligns with a prominent stance in neurology and neuroscience that consciousness admits of degrees. My paper outlines these views and provides an argument for why this picture of correlating degrees of consciousness with moral status and research protections is mistaken. I then provide (...) an alternative account of the correlation between moral status and consciousness, and consider the epistemic ramifications for research protections of this account. (shrink)