Monkeys, money, and prostitution

The authors of Freakonomics now have a regular column in the New York Times Magazine. This week, they addressed ongoing studies concerning capuchin monkeys and their understanding of money. Of course, once conditioned to treat silver coins as currency, the monkeys stole, cheated, and whored themselves out, proving once and for all that a planet of the apes would be no better than the one we currently inhabit.