Study suggests apes and humans shared same laugh for 15 million years OC Today-DispatchRhythm and timing in laughter reveal that human vocal plasticity falls on a hominid continuum | Communications Biology NatureWhat an ape’s laugh can teach us about human language National GeographicGet a load of this: Humans and great apes share similar giggles AP NewsScientists studied the laughter of apes – and discovered something incredibly human-like BBC Wildlife Magazine