​Melanie M. Beasley received her MA in Anthropology from California State University-Chico with a project using stable carbon and nitrogen isotopes to test models of resource depression and expanding diet breadth of Ohlone populations in Central California. She went on to receive her PhD in Anthropology with an emphasis in Anthropogeny from the University of California-San Diego and was then a Haslam Postdoctoral Fellow at the Forensic Anthropology Center at the University of Tennessee-Knoxville. In both her PhD and postdoctoral research, she continued to be interested in how isotopes can be used as a tool to investigate past human behavior, shape our evolutionary trajectory, and be used to address the grand challenges facing humanity today. She is currently an Assistant Professor in the Department of Anthropology at Purdue University and is Director of the BioAnth Isotope Ecology Research Laboratory (BIER Lab).Andrew D. Somerville received his MAand PhD in Anthropology at the University of California-San Diego. He spent a year in Mexico City as a UC MEXUS Postdoctoral Research Fellow at the Universidad Nacional Autónoma de México. His research focuses on the archaeology and ecology of the ancient Americas. He is the co-director of excavations for the Proyecto Hacienda Metepec at the ancient Mexican metropolis of Teotihuacan and is leading new research on the origins of agriculture in the Tehuacan Valley of Puebla, Mexico. Currently, he is an Assistant Professor of Anthropology in the Department of World Languages and Cultures at Iowa State University where he directs the Paleoecology Laboratory and is a faculty member of the Ecology and Evolutionary Biology interdisciplinary PhD program.