A. R. Ruis is a research scientist at the Wisconsin Center for Education Research and a fellow in the Department of Medical History and Bioethics at the University of Wisconsin–Madison. He is the author of Eating to Learn, Learning to Eat: The Origins of School Lunch in the United States, as well as numerous articles on the history of food, nutrition, and health; quantitative ethnography and digital humanities; health services research; and STEM and medical education. Dr. Ruis led the development of iPlan, which simulates the impacts of land use on socio-economic and environmental issues, and he has contributed to the development of other learning simulations and analytic tools. He also edits the book series Repast—Studies in the History of Nutrition, which is published by Johns Hopkins University Press, and he is a co-founder and editor of H-Nutrition.