Gina McCarthy is the former administrator for the United States Environmental Protection Agency under President Barack Obama and one of the leading national experts on environment and public health impacts of climate change. She has been advocating for strategies to protect the environment and public health for over thirty years. During her years as administrator under President Obama, she led major progress in the public health and environmental protection goals, including signing the Clean Power Plan, first-ever national standards to reduce carbon emissions, and signing the Paris Climate Agreement. Currently she teaches a course at Harvard University titled “Environmental Leadership: Integrating Science, Public Policy, and Political Rhetoric.”