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This is Scientific American 60 Second science. I'm Suzanne Bard.

The rain in Spain stays mainly in the plane.

The rain in Spain stays mainly in the plane.

Why can people speaking the same language have 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.

Accent development is the first step in language change.

Fifteen hundred years ago, languages like English, Dutch and Swedish were actually all dialects of the same language, but of course then they diversified

over time.

University of Munich linguist Jonathan Harrington.

He's interested in how accents first get started.

But because of global communication, most communities are no longer linguistically isolated.

And 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 turned to members of

the British Antarctic Survey who speak with a variety of English accents.

...