The USDA tells us to: “Know Your Farmer, Know Your Food.” The American Farmland Trust reminds us: “No Farms, No Food.” Powerful messages indeed. And then there are the Peterson brothers — Greg, Nathan, and Kendal — from Kansas. They farm. They sing. And they’ve gone viral to the delight of millions. After writing funny, farm-friendly lyrics to LMFAO’s hit “I’m Sexy And I Know It,” these three brothers — who’ve branded themselves as The Peterson Farm Bros — have found a fresh way to focus a well-deserved spotlight on the people who grow our food.