Ellen Connorton is the Lancet Countdown’s Head of Policy, advancing evidence-based action to address the health impacts of climate change. Ellen brings extensive leadership experience in environment, health and science policy, across government, multilateral and non-government organisations. She previously worked at the United Nations Development Programme as Policy Specialist for Air Pollution and Health. Before this she was a senior science advisor with the US Department of State. She holds a Doctor of Science in Health Policy from the Harvard T.H. Chan School of Public Health, an MPA from Harvard’s Kennedy School, an MSW from the University of Pennsylvania, and a BA from the George Washington University.