[Sci.News] Post-Neolithic Diet-Induced Dental Changes Led to Introduction of ‘F’ and ‘V’ Sounds

A class of speech sounds that is now present in nearly half of the world’s languages -- labiodentals, produced by positioning the lower lip against the upper teeth, such as in ‘f’ or ‘v’ -- are a relatively recent development, one brought about by post-Neolithic diet-induced changes in the human bit...