Also on B13 of today's WSJ: comparing the relative effects of vegetarianism and plain ol' omnivorism on the environment. According to Slate, vegetarianism (including milk and eggs) is better if you have good soil and can therefore grow more vegetables more easily. But if you have poor soil, it makes more sense to have a chicken farm than a crop farm.
Dousing the hopes of meat-eaters everywhere: the recommendation to eat only two ounces of meat and eggs daily. The average American eats 3.8 ounces more than this recommended maximum. Rats!