Laughter is often called the most human sound. It carries joy, relief, connection, and sometimes even healing. For centuries, we believed that laughter belonged only to us, a special emotional ...

Here's something that'll make your next giggle session feel a bit weird: scientists genuinely can't figure out if your laughter evolved from joyful chimp panting or from the threatening bared-teeth ...

Why do we laugh? It might feel simple, but laughter is actually a full-body experience—one powered by complex neural circuits and ancient social instincts. And, it turns out, it can even be good for ...