Peter Courtland Agre is a Nobel Laureate American physician, molecular biologist, Bloomberg Distinguished Professor at the Johns Hopkins Bloomberg School of Public Health and Johns Hopkins School of Medicine, and director of the Johns Hopkins Malaria Research Institute. In 2003, Agre and Roderick MacKinnon shared the 2003 Nobel Prize in Chemistry for "discoveries concerning channels in cell membranes." Agre was recognized for his discovery of aquaporin water channels. Aquaporins are water-channel proteins that move water molecules through the cell membrane. In 2009, Agre was elected president of the American Association for the Advancement of Science (AAAS) and became active in science diplomacy. The Nobel Prize in Chemistry 2003, announced October 8, 2003. Peter Agre (1/2), “for the discovery of water channels”. Roderick MacKinnon (1/2), “for structural and mechanistic studies of ion channels”. Peter Agre: born 1949, Northfield, MN, USA. Roderick MacKinnon: born 1956, Burlington, MA, USA. Wiki link Wiki link Data: the Nobel Foundation (CC0).