Xiaoyue Du is a postdoctoral research fellow at Empa, Swiss Federal Laboratories for Materials Science and Technology. She works on a variety of topics, such as assessing the supply risk of key materials for industries, evaluating the environmental impact of metal recycling, examining the metal flows of end-of-life vehicle recycling in Switzerland, integrate LCA into early-stage product development. She holds a PhD and MPhil in Environmental Science from Yale University, where she worked with Professor Thomas Graedel to quantify the material flows, stocks and criticality of the rare earth elements. She holds a BS in Geochemistry from University of Science and Technology of China. She also worked for a few companies in the US and her past experience includes evaluating carbon footprint at Eileen Fisher, constructing life cycle models for rare earth mining and production for Siemens and developing renewable energy project for New England Smart Energy Group.