A University of Miami anthropologist discovered a link between languages that possess a certain consonant sound and their altitude. Does geography shape how our languages sound?
As anyone who has ever been to a hog-calling contest or a middle school cafeteria can attest, humans are capable of producing all sorts of sounds. But most languages take advantage of only a small portion of these. English, for instance, has just 42 or so distinct sounds, a fraction of our species' vocal capabilities.
So why do some languages pick up some sounds and eschew others? Most linguists have assumed that it's more or less random, but a new study suggests that geography might play a role.
One particular type of sound called the ejective consonant, a sort of puh, kuh, or tuh noise produced by creating a pocket of air in the throat and compressing it. We don't have ejective consonants in English, but about one in five languages have them, mostly in eastern and southern African languages, and in indigenous languages in the western parts of North and South America. Ejective consonants can also be found in the Caucasus.
University of Miami anthropologist Caleb Everett noticed that languages of people living at high elevations tend to have ejective consonants and that those in low-lying areas tend to lack them. He went through the World Atlas of Linguistic Structures Online, a huge database of languages and their phonological, lexical, and grammatical properties, and compared them with the geographic coordinates and elevations of the languages' locations.