April 11, 2007 (Wed.), 7:30 p.m., Robbie Cox, past president of the national Sierra Club, is a UNC Professor of Communication who studies how public conversation about the environment affects public policy. He is also an avid outdoorsman who treks and climbs mountains in Asia and Africa. He'll bring together his research, his love of nature, and his experience as a national environmental leader in his talk on the national conversation about the climate. Come hear his ideas about the relationship between what we say about the environment and what we do.