Dr David Lewis, who carried out the research, said water is crucial because it is required for every function of the body. In particular, he said, it is important to keep hydrated so the lining of ...

David A. Lewis, Ph.D., is an adjunct professor in the Management Department and Operations and Information Systems (OIS) Department. Prior to joining UMass Lowell, Lewis taught at the University of ...

David Lewis is Professor of Global Politics at the University of Exeter. He is a specialist on international relations, with a regional focus on Russia, Central Asia and the Caucasus. Professor Lewis ...