Although languages around the world vary greatly, some share similar speech sounds. A new study suggests that labiodental sounds like "f" and "v" are included in about half of the world's languages due to a change in our diet that relies on softer foods.
원문출처 : https://www.cnn.com/2019/03/14/health/diet-changed-speech-sounds-study/index.html
원문출처 : https://www.cnn.com/2019/03/14/health/diet-changed-speech-sounds-study/index.html