Why has the female voice deepened over the last fifty years? Who talks more, men or women? How can a baby in the womb distinguish between different voices? The

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'I'm whispering into your ear - and we couldn't be further apart.' A woman, a phone call, a final conversation. In this extraordinary and prophetic monologue a

A New York Times bestselling writer explores what our unique sonic signature reveals about our species, our culture, and each one of us. Finally, a vital topic