Reuters: Grass-Fed Beef Packs A Punch To Environment

Gidon Eshel is a professor with the Physics department of Bard College, Annandale-on-Hudson, New York. He is currently researching diet's effects on the environment, and has found that grazing, grass-fed animals emit two to four times as much methane, a greenhouse gas roughly 30 times more powerful than carbon dioxide. Here is his research on Reuters.