Yohannes Haile-Selassie is Virginia M. Ullman Professor of Natural History and the Environment in the School of Human Evolution and Social Change and Director of the Institute of Human Origins at Arizona State University. His research interest is understanding the paleobiology and paleoecology of early human ancestors based on the fossil record. He has made fossil discoveries that are significant in human origins research, and leads an international multidisciplinary team that conducts fieldwork in the Afar Region of Ethiopia. Haile-Selassie was Nature journal's one of ten people who mattered in science in 2019. He is also a Fellow of the American Association for the Advancement of Science and Associate Fellow of the Ethiopian Academy of Sciences.