How Chewing Gave Humans Flat Faces, Little Teeth And Wimpy Jaws

Chewing foods that have been just simply pounded and sliced with rudimentary tools could have led to the evolution of our current jaws. It turns out that chewing has had a huge impact on the way we look.
In order to understand the structure of the skull, scientists must study how food is chewed and processed as well as the types of food eaten over evolutionary time. And compared to our ancestors, we are pretty lame chewers.