If you eat meat, the odds are high that you've enjoyed a meal made from an animal raised on a factory farm. The government designation is CAFO, which stands for Concentrated Animal Feeding Operation. Basically, it's any farm that has 1,000 animal units or more. A beef cow is an animal unit. These animals are kept in pens their entire lives. They're never outside. They never breathe fresh air. They never see the sun. 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. There are simply too many animals in too small of a place. CAFO cows eat a diet of milled grains, corn and soybeans, when they are supposed to eat grass. The food isn't natural because they very often put growth hormones and antibiotics in it. When you have 2,000 cows per acre instead of two, you have a problem. You can't fit them in a pasture you fit them in a building. You don't have enough land to absorb their waste. The manure is liquefied. It gets flushed out into an open lagoon [and] sprayed into waterways and creeks. This stuff is untreated, by the way.