Wenda R. Trevathan is a Regents Professor emerita of anthropology at New Mexico State University. She is also the author of Human Birth: An Evolutionary Perspective and Ancient Bodies, Modern Lives: How Evolution Has Shaped Women's Health.
Karen R. Rosenberg is a professor of anthropology at the University of Delaware. She is a paleoanthropologist whose research focuses on the origin of modern humans and the evolution of modern human childbirth.