J. Robert Cox (Ph.D. & M.A., University of Pittsburgh; B.A., University of Richmond) is Professor of Communication Studies and the Ecology Curriculum at the University of North Carolina at Chapel Hill. His principal research and teaching foci are rhetorical theory, environmental communication, and critical study of the discourse of change agents and social movements. He is considered one of the nation's leading scholar s in environmental communication and has been President of the Sierra Club twice (2000-01; 1994-1996); he has served on the Board of the Directors for the Sierra...