Black Angus cows stand together in their paddock. Cows produce methane, a potent greenhouse gas.
Black Angus cows stand together in their paddock. Cows produce methane, a potent greenhouse gas. Michael Probst AP
Black Angus cows stand together in their paddock. Cows produce methane, a potent greenhouse gas. Michael Probst AP

If the U.S. went vegan, emissions would drop. But there’s a catch, a new study says

November 14, 2017 05:34 PM

UPDATED November 15, 2017 09:46 AM