Meat on the Menu: At What Cost?

Jeremy Rifkin is president of the Foundation on Economic Trends and the Greenhouse Crisis Foundation. His books include "Entrophy," "Biosphere Politics," and "Beyond Beef." T. Colin Campbell is Jacob Gould Schurman Professor of Nutritional Biochemistry at Cornell University and director of the Nutrition and Cancer Program Project. He is the author of over 250 journal articles. From the University Lectures Program archive.