Burger King is trying to do their part when it comes to global warming, and it all starts with what their cows eat. Burger King is starting to feed its cows lemongrass leaves in hopes of reducing their methane emissions by 33 percent. Preliminary research shows that lemongrass help cows fart less often as they digest their food. BK has even launched a social media campaign that includes a music video starring “Walmart Yodeling Kid” Mason Ramsey and a tweet that reads, “Breathe the farts of change.”