ccording to a study published in Animal Science Journal last August, creating a pound's worth of beef releases the same amount of greenhouses gases—the equivalent of 36.4 pounds of carbon dioxide—as driving a car 155 miles at 50 miles per hour. And that's an underestimate of the industry's total impact, since the study didn't account for emissions from farm equipment or the fuel expended on transporting product from killing floor to supermarket.