Prof. Erickson is a historian of science whose work explores connections between the human sciences and natural sciences in the 19^th and 20^th centuries, with special interest in the history of the environmental sciences, the history of economic thought, and the history of mathematical models and theory development across scientific disciplines.  His first book, The World the Game Theorists Made (2015), traced the post-World War II adoption of game theory and related models of rational choice in fields from operations research and economics to social psychology and evolutionary biology.  His current research focuses on the history of ideas of growth and development as they moved between the social and natural sciences from the 19^th century onward, and on the changing relationship between economics and the environmental sciences during this period.