Irva Hertz-Picciotto, PhD, MPH, is an environmental epidemiologist committed to furthering our understanding of how both specific exposures and global climate or planetary changes harm health. Her work has tackled the effects of substances like metals, pesticides, air pollutants, organic compounds, and endocrine disruptors on cancer, pregnancy, perinatal outcomes, respiratory health, immune markers and neurodevelopment. Additional themes have included innovations in epidemiologic methods, and the interactions of environmental factors with nutrition, genetics, and social stressors.