Libby W. Cowgill is an associate professor of anthropology at the University of Missouri, specializing in Neandertal and early modern human growth, functional morphology, and human adaptation to climate. She has received several prestigious grants and was awarded the Provost's Outstanding Junior Faculty Teaching Award (2016) and the William T. Kemper Fellowship for Teaching Excellence (2020) from the University of Missouri, Columbia. Cowgill's expertise has also been showcased in the media, with appearances on BBC/PBS's Neanderthals: Meet Your Ancestors and Netflix's Babies. Scott D. Maddux is an associate professor of anatomy at the University of North Texas Health Science Center in Fort Worth. His research centers on the distinctive craniofacial morphologies of Neandertals and modern humans, with a particular focus on evolutionary changes in upper respiratory tract anatomy. Supported by grants from the National Science Foundation, the Leakey Foundation, and the Wenner-Gren Foundation, his work has been published in prominent journals such as the Journal of Human Evolution, the American Journal of Biological Anthropology, and the Anatomical Record.