Judith Sealy is a Research Professor in the Department of Archaeology at the University of Cape Town (South Africa), where she specializes in stable isotope analyses of archaeological remains to reconstruct ancient diets and environments. Analyses of human remains provide information on spatial and chronological variation in peoples’ diets, contributing to our understanding of economy and social organization. Studies of animal remains enable us to track environmental and climatic changes, and possible links with developments in human societies. This work combines archaeology with aspects of forensic and environmental science to address questions in human evolutionary ecology.