A study by an anthropological linguist found that languages spoken in high-altitude areas are more likely to include ejective consonants, a sound involving short bursts of air that is not found in English. It is the first study to present conclusive evidence that language sounds can be influenced by geography. "Some people will argue that this is just a historical accident, that it just so happens that the languages that have ejectives are spoken at high altitudes. That's possible, but it's pretty unlikely," said Caleb Everett, the study's author.

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