Howie Frumkin is Head of Our Planet, Our Health (OPOH) team at Wellcome Trust. Prior to his position, he was a professor of environmental and occupational health sciences at the University of Washington School of Public Health, where he served as dean from 2010 to 2016. He is an internist, environmental and occupational medicine specialist, and epidemiologist. Previously, he directed the National Center for Environmental Health and Agency for Toxic Substances and Disease Registry at the US Centers for Disease Control and Prevention (2005–2010) and was a professor and the chair of environmental and occupational health at Emory University’s Rollins School of Public Health (1990–2005). Frumkin’s research interests include the public health aspects of the built environment, climate change, energy policy, and nature contact. He is the author or coauthor of more than 200 scientific journal articles and chapters. His books include Urban Sprawl and Public Health (2004); Emerging Illness and Society (2004); Safe and Healthy School Environments (2006); Green Healthcare Institutions: Health, Environment, Economics (2007); Making Healthy Places: Designing and Building for Health, Well-Being, and Sustainability (2011); and Environmental Health: From Global to Local (third edition, 2016). Frumkin holds an AB from Brown University, an MD from the University of Pennsylvania, and an MPH and DrPH from Harvard University.