Alice Beck Kehoe conducted participant observation ethnography among North American Northern Plains First Nations and in an Aymara village in the Andes, Bolivia, and also archaeology in the Northern Plains, Tiwanaku in the Andes, and in Europe. She has taught Anthropology at Marquette University, Milwaukee, WI.

Andrew J Petto, PhD, is a biological anthropologist with interests in comparative anatomy, population biology, evolution, and science education. He is Distinguished Lecturer Emeritus in the Department of Biological Sciences at the University of Wisconsin-Milwaukee. His most recent book is Human Structure and Function (TopHat Monocle, 2022).