Eshel et al. (1) quantify the land, irrigation water, and reactive nitrogen demands of feed production, and calculate a full life cycle of greenhouse gas emission estimates for each of the five major animal-based categories in the United States diet: dairy, beef, poultry, pork, and eggs. The authors find that beef contributed most to these impacts, making decreases in beef consumption an
... [Show full abstract] important lever in changing the impact of United States human diet on the environment.