Linlin Duan, Doctoral Candidate Linlin Duan is a doctoral student of ecology in the Institute of Urban Environment, Chinese Academy of Sciences (CAS). He got his bachelor degree in Ecology from Fujian Agriculture and Forestry University and got his master degree in Environmental Science from the Institute of Urban Environment, Chinese Academy of Sciences (CAS). Then he worked as a research assistant at the same place for 1 year. His current research focuses on time and space pattern of the exploitation and utilization of metals upon a global scale.Education Ph.D., 2018/08–Present; Candidate, Ecology, IUE, CAS, Xiamen M.S., 2014/09–2017/07; Environmental Science, IUE, CAS, Xiamen B.S., 2010/09–2014/07; Ecology, Fujian Agriculture and Forestry University