Worried about how milk and meat production are causing global warming, singer Paul McCartney and the U.N. recently launched a campaign in Europe called “Less Meat=Less Heat” while other activists are promoting “meatless Mondays.” But according to Dr. Frank Mitloehner, a professor of air quality and animal science at the University of California, Davis, such efforts are not “well-schooled” in complex science. He asserts that producing less milk and meat will only mean more hunger in poor countries, and instead suggests these countries adopt more efficient, Western-style farming practices to make more food with lower emissions. With the U.N. now admitting it exaggerated the impact of livestock on climate, maybe you can enjoy your next cheeseburger with a little less guilt.