Sign up for the MSNBC newsletter

You have been successfully added to our newsletter.

Let our news meet your inbox

Dylan Ratigan Show

The roots of humans’ primal behavior

copied!

Biologist Dario Maestripieri, author of “Games Primates Play: An Undercover Investigation of the Evolution and Economics of Human Relationships,” explains the behavioral quirks connecting humans to primates.May.10.2012

BEST OF MSNBC

Play All