Biophysicist Luca Turin studies the science of smell. He's a leading proponent of the vibrational theory of smell -- the idea that when our noses pick up a scent, we're reacting to the vibrational properties of the molecule we're smelling.

His latest talk on TED explains the science behind a sublime perfume. With charm and precision, biophysicist Luca Turin explains the molecular makeup -- and the art -- of a scent.

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