Humans have more universal ways of expressing happiness than any other emotion, new study finds. Disgust, for example, needs just one facial expression to get its point across throughout the world. Happiness, however, has 17, a testament to the many varied forms of cheer, delight and contentedness.

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Humans have more universal ways of expressing happiness than any other emotion, new study finds. Disgust, for example, needs just one facial expression to get its point across throughout the world. Happiness, however, has 17, a testament to the many varied forms of cheer, delight and contentedness.