The Atlantic: If Everyone Ate Beans Instead of Beef - With one dietary change, the U.S. could almost meet greenhouse-gas emission goals.
Global Food Security: Livestock: On our plates or eating at our table? A new analysis of the feed/food debate
Carrying capacity of U.S. agricultural land: Ten diet scenarios
Journal of Cleaner Production: Assessment of the nutritional quality and environmental impact of two food diets: A Mediterranean and a vegan diet
The Vactory: Umwandlungseffizienz Tierfutter -> Endprodukt
Landwirtschaft: Äcker könnten vier Milliarden Menschen mehr ernähren - SPIEGEL ONLINE - Wissenschaft