Anti-Meat Activist Wayne Pacelle of the Humane Society of the United States may have scored success getting McDonald's to oppose gestation crates for hogs, but his meat math doesn't add up. He told NPR listeners that if everyone cut their meat consumption by 10 percent, it would "save" 1 billion animals. He contends that this may give more space for the animals. He goes on to say it would also be better for our health and the environment. The latter may be correct but, unless he means never being born is to "save," his first two points are contradictory and economically fallacious. Farmers will not produce animals that do not have a market, and the space they allocate is based on the animal's needs and affordability. Cows won't suddenly...