Within the framework of their Memorandum of Understanding, Peking University (hereinafter referred to as PKU) and the International Institute for Applied Systems Analysis (hereinafter referred to as IIASA) have launched the PKU-IIASA International Postdoctoral Fellowship Program, aimed at training highly qualified early-career postdoctoral researchers to carry out research in fields of mutual interest at both PKU and IIASA, which include but are not limited to advanced methodology, technological, economic, and environmental challenges including pollution and risk analysis, energy, ecology,