One strand of Chris’ research is focused on empirical and quantitative assessments of human well-being, and their implications for economic, social, and environmental policy. He uses large international as well as national surveys, experiments, and economic theoretical modeling to understand individual and aggregate consumption benefits, and their implications for policy, including a broad transition to sustainability. Another current strand of work aims to understand household economic and health effects of Beijing’s rural household heating coal-to-electricity programme. A third interest of Chris’ is the structure of urban road networks, globally, and their implication for development and climate policy.