Congratulations to Prof. Chaosheng Zhang for the “Distinguished Service Award” from International Medical Geology Association (IMGA) in 2021, for exemplary service to IMGA and to Medical Geology. IMGA aims to provide a network and a forum to bring together the combined expertise of geologists and earth scientists, environmental scientists, toxicologists, epidemiologists and medical specialists, in order to characterise the properties of geological processes and agents, the dispersal of geological material and their effects on human populations.