Yongsheng Chen received his B.S. in Materials Science and Engineering from Tsinghua University, Beijing, China, in 1994. He attended the Graduate School of the Chinese Academy of Sciences, carried out research work on surface physics at the Institute of Physics in Beijing, and received his M.S. in Physics in 1997. He came to the U.S. in 1998, advanced his graduate studies in heterogeneous catalysis at Lehigh University in Bethlehem, Pennsylvania, and obtained a Ph.D. in Chemical Engineering in 2003. Dr. Chen started his postdoctoral training at the Pacific Northwest National Laboratory in Richland, Washington, working with Staff Scientist John L. Fulton on various research topics using synchrotron based x-ray absorption fine structure spectroscopy. He joined the John and Willie Leone Family Department of Energy and Mineral Engineering at Penn State University as an assistant professor in November 2007 after a short appointment as a Research Associate at the National Renewable Energy Laboratory in Golden, Colorado.