I couldn't help but listen to this story from NPR...a bit of human evolutionary history coupled with mention of "storytelling" as uniquely human behavior (you have to listen closely for that last bit, but it's in there).
Further proof that barbecue is good for you. Mmmmm.
"Meat, Fire, and the Evolution of Man" by Christopher Joyce
Any day I can mention barbecue and storytelling in the same post is a good day.