"Tropical Languages: Louder Than the Rest, Linguistics Study Finds"

A study published in PNAS Nexus suggests that languages spoken in warmer regions tend to be louder than those in colder regions. The study found a clear relationship between the mean sonority of language families and the mean annual temperature. The physics of air, influenced by temperature, affects the production and perception of speech sounds. However, there are exceptions to this trend, indicating that the effects of temperature on sonority develop slowly over centuries or even millennia. This research challenges the notion that linguistic structures are self-contained and not influenced by the environment, opening new paths for understanding human societies and migration patterns.