AdvertisementCan Oregano Fight Cow Belches — And Climate Change?May 12, 2016Sidsel OvergaardfacebookEmailNormandy cows feed on alfalfa before milking at a farm in Courcite, northwestern France. Feeding cows alfalfa could reduce how much they burp. So could feeding them oregano, which has belch-squelching essential oils. (AFP/Getty Images)