At the dawn of the Neolithic revolution , which occurred around 10,000 years ago, humans began eating less raw wild foods and more processed meals. A study published in Science shows how this reduction of pressure on the teeth caused changes in the way the human jaw developed and grew. Adults of the new agricultural world developed an overbite that caused the top teeth to grab the bottom lip, and so were born the “f” and “v” sounds we use so often today.

Lês en sjoch fierder by Ancient Origins