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Communicating quickly, accurately and, ideally, in a way that's well-received is no easy feat, wherever you live in the world. For this week's listener, who lives and works in several different countries as a member of the armed forces, good communication can be a matter of life or death. And this doesn’t just affect military life – anyone who flies on aeroplanes may be interested to hear how clear use of language is crucial for airline safety.

But what do we mean by an efficient language – it is the fastest and most accurate speech, or most widely understood in multiple countries? Maybe there’s even some technology – a machine out there that can do the communicating more efficiently than we can? Presenter Marnie Chesterton attempts to apply science and evidence to the art of speech, in a quest to discover what language is the most efficient on Earth.

Produced by Jen Whyntie

(Image: A group of people holding up speech bubbles sitting on a bench. Credit: Getty Images)