Contrary to popular arguments, factory farming is not a cheap, efficient solution to world hunger. Feeding huge numbers of confined animals actually uses more food, in the form of grains that could feed humans, than it produces. For every 100 food calories of edible crops fed to livestock, we get back just 30 calories in the form of meat and dairy. That’s a 70-percent loss. With the earth’s population predicted to reach nine billion by mid-century, the planet can no longer afford this reckless, unhealthy and environmentally disastrous farming system.