Prof. Mark J Nieuwenhuijsen is a world leading expert in environmental exposure assessment, epidemiology, and health risk/impact assessment with a strong focus and interest on healthy urban living. He has experience and expertise in areas of all cause mortality, respiratory and cardiovascular disease, mental health and cognitive function, cancer and reproductive health, and exposure measurement and modelling of indoor and outdoor air pollution, green space, UV exposure, noise, temperature and physical activity, using new technology such as GIS, smartphones, personal sensors, and remote sensing. He has edited three books on exposure assessment and on environmental epidemiology, and has co-authored more than 350 papers published in peer reviewed journals.Dr. Haneen Khreis is a cross-disciplinary expert in the health impacts of transport planning and policy. She has experience in transport planning and engineering, vehicle emissions, air quality, exposure assessment, epidemiology, health impact and burden of disease assessment, child health, policy options generation, knowledge translation, cross-disciplinary collaboration, and the science-policy link in transport and health. She has published extensively on the topic and is editing a new book on Traffic-Related Air Pollution, Human Exposures and Health.