This excerpt is from Wired magazine's excellent look at the Future of Food: How Science Will Solve the Next Global Crises. With stats, history, and details explanations of the issues surrounding Corn, Hunger, Dairy and Beef, and Farming, it's an article worth reading!
"Forty years ago, advances in fertilizers and pesticides boosted crop yield and fed a growing planet. Today, demand for food fueled by rises in worldwide consumption of meat and protein is again outpacing farmers ability to keep up. It's time for the next Green Revolution."