Jared Mason Diamond  is an American scientist and author best known for his popular science books The Third Chimpanzee (1991), Guns, Germs, and Steel (1997, awarded a Pulitzer Prize), Collapse (2005) and The World Until Yesterday (2012). Originally trained in physiology, Diamond is known for drawing from a variety of fields, including anthropology, ecology, geography, and evolutionary biology. As of 2013, he is Professor of Geography at the University of California, Los Angeles.