Lemondrop

Apparently, 130,000 years ago there was a lot of hairy, angry, grunty humping going on here on planet Earth.

Using fossilized remains to compare the ratio between the fourth and second fingers, researchers determined that Neanderthals were exposed to more prenatal androgens than we are. Androgens are responsible for the development of fingers, toes and the reproductive system, and scientists believe that traits like competitiveness, aggression and promiscuity are directly affected by the degree of exposure to them in the womb.

In other words, Neanderthals and early members of the human species were probably way more aggressive and promiscuous than we are today. Hot!

From now on we're going to imagine caveman times were just like "Jersey Shore," minus the body waxing and plastic surgery: aggressive, promiscuous and very, very tan.