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 NatureTickled Apes Reveal the Rhythmic Roots of Laughter The New York TimesApes and humans have been sharing a laugh for 15 million years Phys.orgWhat an ape’s laugh can teach us about human language National Geographic
