Nancy Krieger PhD ’89 is a professor of social epidemiology at the Harvard T.H. Chan School of Public Health, American Cancer Society Clinical Research Professor, and director of the HSPH Interdisciplinary Concentration on Women, Gender, and Health. Krieger is an internationally recognized social epidemiologist who has dedicated 30+ years on activism involving social justice, science, and health. In 1994 she co-founded, and still chairs, the Spirit of 1848 Caucus of the American Public Health Association, which is concerned with the links between social justice and public health. Her work focuses on ecosocial theory of disease distribution, etiologic research on social determinants of health, and improving monitoring of health inequities.