Few sounds encapsulate the feeling of pure, undiluted joy better than a baby’s giggle. But as babies mature into toddlers and inevitably veer closer to adulthood, their laughter loses some of this ...

Laughter transcends all languages – and now scientists know this spontaneous response is universal across some primate species, too. The laughing patterns of human infants match those of great apes, ...

Whether overheard in a crowded restaurant, punctuating the enthusiastic chatter of friends, or as the noisy guffaws on a TV laugh track, laughter is a fundamental part of everyday life. It is so ...