Diana Hernandez, PhD is a tenured Associate Professor of Sociomedical Sciences at Columbia University's Mailman School of Public Health. Dr. Hernandez conducts research at the intersection of energy, equity, housing and health. A sociologist by training, her work focuses on the social and environmental determinants of health and examines the impacts of policy and place-based interventions on the health and well-being of socioeconomically disadvantaged populations. An innovator in the field, Dr. Hernandez has operationalized and conducted foundational research on the concept of 'energy insecurity' which reflects the inability to adequately meet household energy needs. Her pathbreaking work on energy insecurity has explored the multiple dimensions of this phenomenon identifying sociodemographic disparities, adverse consequences and promising interventions toward energy justice.