The world’s tens of billions of meat chickens—“broilers”—grow at a freakishly fast pace. Concentrated in houses with upwards of 20,000 to 30,000 other birds, each full-grown chicken gets less than a square foot of living space. Modern broilers spend their short 7-week lives on top of their own waste encrusted bedding, which the industry refers to as “cake” or “poultry litter,” and sometimes enters the food chain as a cattle feed supplement. They let them eat cake!