Cornell University: U.S. could feed 800 million people with grain that livestock eat, Cornell ecologist advises animal scientists
Future water and energy shortages predicted to change face of American agriculture

http://www.news.cornell.edu/releases/Aug97/livestock.hrs.html

BBC News: Hungry world 'must eat less meat'
http://news.bbc.co.uk/2/hi/science/nature/3559542.stm