Asher Rosinger, PhD MPH is a human biologist and interdisciplinary scientist. Dr Rosinger is the Ann Atherton Hertzler Early Career Professor in Global Health at the Pennsylvania State University, where he founded and directs the Water, Health, and Nutrition Laboratory. His overall research program is designed to understand the range of human variation in water intake and how this relates to adaptation, environmental changes, water insecurity, and health, hydration, and disease risk. He examines how humans respond to changing nutritional and economic environments through water and dietary intake and the significance of mismatches in these relationships for short- and long-term health, nutrition, and disease. In particular, he examines these issues in the Bolivian Amazon among indigenous Tsimane’ forager-horticulturalists, in Kenya among Daasanach agro-pastoralists, and in the US using complex survey data from the National Health and Nutrition Examination Surveys (NHANES). He has published more than 60 peer-review articles and book chapters, as well as the July 2021 Scientific American cover story on the evolution of human water needs, "Human Evolution Led to an Extreme Thirst for Water."