Leiwen Jiang is a demographer trained in environmental sciences. His research portfolio has involved methodological work on improving the demographic component of integrated environment and climate assessments. He studies environmental implications of demographic dynamics and changes in household consumption patterns.  He is Scientist at National Center for Atmospheric Research (NCAR) and Founding Director of Asian Demographic Research Institute (ADRI) at Shanghai University.  He taught at Brown University and Peking University, and was also Chief Demography at Population Action International (PAI), and guest research fellow at International Institute for Applied Systems Analysis (IIASA) and Max Planck Institute for Demographic Research. He served as Lead Author of Intergovernmental Panel on Climate Change (IPCC) 5thAssessment Report and Member of IUSSP Scientific Panel on Climate Change. He is currently chairing the IPCC Scholarship Program WGIII Technical Committee and serving as convener of the theme on Population, Consumption, and Environment of the IUSSP 2017 Conference.