Dr. Cohen is a Distinguished Professor of Chemical and Biomolecular Engineering (CBE) at the University of California, Los Angeles (UCLA), a Faculty member of the Institute of the Environment and Sustainability (1981-present), and Director of the Water Technology Research (WaTeR). He is a Faculty Affiliate of the California NanoSystems Institute and Adjunct Professor at Ben-Gurion University. He received the Clarence (Larry) G. Gerhold Award (2019) and the Lawrence K. Cecil Award (2003) from the Separations Division and Environmental Division, respectively, of the American Institute of Chemical Engineers (AIChE). He is a Fellow of both AIChE and the North American Membrane Society (NAMS) and received a Certificate of Special U.S. Congressional Recognition (2008) for contributing to public health protection and dedicated service to the community. He is a recognized expert and innovator in water treatment, desalination and membrane technology, environmental protection, toxicity modeling, machine learning, and nanoinformatics. He is active in promoting water reuse and the development of clean drinking water supplies for disadvantaged communities.