"This is scientific American sixty seconds science. I'm Suzanne barred. They Ryan in spines sties. Nine late in the lying rain in Spain stays mainly in the plane. Why can people speaking the same language have such such different accents. The short answer new accents begin to develop when isolated groups of speakers start making nearly imperceptible changes to the way they pronounce. Words accents development is the first step in language change kicking hundred years ago languages like English. Joie Chen's Swedish actually all dialects of the same language but of course then they go over. Time University of Munich Linguist Jonathan Harrington. He's interested in how accents for skit started. But because of global communication most communities are no longer linguistically isolated slated. An audio recording equipment. Didn't exist back when more of them were so how to capture the early stages of accent formation today Harrington and his team team turned to members of the British Antarctic survey who speak with a variety of English accents when you're in Antarctica during the winter period then says no way in and there's no way out so they were isolated together and a interacted with each other and they have to cooperate with each each although Harrington's team recorded the winters reciting list of words before they left for Antarctica then while they're the winters recorded themselves saying saying the same words for more times the linguist then analyze the recordings in particular resonances. The way airflow shape sound resonances says all the defining Christine features which let you distinguish one vowel from the nest and even during their short time in Manteca the way the winters produced certain valves began to converge averaging out the resonances for example at the beginning of the study some people produce the Ooh in food at the front of the mouth like this while others use the back of the mouth but they began to sound more similar over time. In addition the winters invented slightly new ways of pronouncing valves such is shifting the production of the second syllable in the word window very slightly forward in the vocal tract the linguistic these small changes document the very beginnings of a common accent. The study is in the Journal of the Acoustical Society. Diety of America Harrington says the research isn't just relevant for understanding Earth's colonial past. He thinks there's every reason to expect that prolonged `isolation will cause stress on Mars missions to end up with an out of this world accent."