(Our happy-hour fact to amaze your drinking buddies with.)

When people trade sex for provisions (even if they have no obvious reason to do so), they're mimicking a trait that has long been seen in female penguins and hummingbirds.

New research shows that even affluent college students will trade "sexual currency" for food, protection and status.

In a less surprising twist, the researchers also illustrated that men are more likely to trade resources for sex, while women will trade sex for resources.

The "exchange investment" has always been a part of human society, in some form or other. But this research says that sex is a universal currency.

We at Asylum think this is excellent news -- with a reliable exchange rate we could finally ditch the dollar.