"The very genetics of chickens, along with their feed and environment, were now intensively manipulated to produce either excessive amounts of eggs (layers) or flesh, especially breasts (broilers). From 1935 to 1995, the average weight of "broilers" increased by 65 percent, while their time-to-market dropped 60 percent and their feed requirements dropped 57 percent. To gain a sense of the radicalness of this change, imagine human children growing to be three hundred pounds in ten years, while eating only granola bars and Flintstones vitamins."