Elizabeth Neswald is an associate professor of the history of science and technology at Brock University in Ontario. She is the author of a book on the cultural history of thermodynamics in the 19th century and a coeditor of the John Tyndall Correspondence Project. She has written several essays on the history of nutritional physiology and basal metabolism studies. Currently, she is investigating racial theories of basal metabolism in the 1920s to 1950s and completing her monograph, Counting Calories: Thermodynamics, Statistics and the Emergence of Modern Nutrition Science. At the Science History Institute she conducted research on the material culture of diabetes management in the 20th century.