Laughter in the wild,
Chimpanzees share their grin's tune—
Roots of speech revealed.
Chimpanzees share their grin's tune—
Roots of speech revealed.
The rhythm of human laughter appears to have deep evolutionary roots shared with chimpanzees, bonobos, gorillas, and orangutans. That ancient pattern may offer one of the clearest clues yet to how the vocal control needed for human speech gradually evolved.