Wulf Schiefenhövel is professor for medical psychology and ethnomedicine at the University of Munich and head of the human ethology group at the Max-Planck-Institute in Andechs, Germany. His main research interests are human ethology and evolutionary medicine, within which he focuses on sexuality and reproduction, human birth behavior, early infancy, language and cognitive concepts as well as the genetic and oral history of Melanesian populationsEckart Voland is professor for philosophy of life sciences at the University of Giessen, Germany. His main research interests are human sociobiology and behavioral ecology. In particular he is interested in the biological evolution of social and reproductive strategies in humans. Moreover, in pursuing the project of naturalizing the human mind and its achievements, he works on the philosophical implications of evolutionary anthropology as reflected in evolutionary ethics and aesthetics.