Monkey See, Monkey Do Each Other

The Scopes monkey trial proved that we are in fact descended directly from monkeys. (I think that's what it proved. I fell asleep halfway through the movie. Black-and-whites do that to me.) But it seems, though our simian lineage gave us a lot, we still have something to give back:

"The authors [of "Freakonomics"] also recounted a study about capuchin monkeys that are known for having a serious sweet tooth. The primates were taught how to use coins to buy confections that researchers had whipped up for the experiment. At one point, some monkeys stole coins from other monkeys and one monkey offered a coin to another in exchange for sex.

"This was the first observed incident of monkey prostitution," Dubner said."

Real-world economics, with zing