Audrey de Nazelle is a Senior Lecturer at the Centre for Environmental Policy, Imperial College London. Her work, at the intersection of environmental sciences, health behavior, transportation, and urban planning, aims at guiding decision makers towards health-promoting built environments and policies. Much of her research has been on the relationships between active travel and air pollution (exposures, health risks and benefits, and societal engagement). Dr de Nazelle holds a PhD from the University of North Carolina at Chapel Hill in Environmental Sciences, a Maîtrise in Mathematics from the University of Paris VI Pierre et Marie Curie, and was a postdoctoral researcher at the Centre for Research in Environmental Epidemiology (now ISGLOBAL), Barcelona, Spain.