The problem with factory farms

Source Time

If you eat meat, the odds are high that you've enjoyed a meal made from an animal raised on a factory farm (also known as a CAFO). According to the USDA, 2% of U.S. livestock facilities raise an estimated 40% of all farm animals. This means that pigs, chickens and cows are concentrated in a small number of very large farms. But even if you're a vegetarian, the health and environmental repercussions of these facilities may affect you. In his book Animal Factory, journalist David Kirby explores the problems of factory farms, from untreated animal waste to polluted waterways. Kirby talks to TIME about large-scale industrial farming, the lack of government oversight and the terrible fate of a North Carolina river. What exactly is a factory farm? The industrial model for animal food production first started with the poultry industry. In the 1930s and '40s, large companies got into the farming business. The companies hire farmers to grow the animals for them. The farmers typically don't own the animals–the companies do. It's almost like a sharecropping system.