Scientists Tickled Gorillas And Found A 15-Million-Year-Old Clue To How Humans Learned Speech - Forbes

1. Scientists Tickled Gorillas And Found A 15-Million-Year-Old Clue To How Humans Learned Speech  Forbes
2. Rhythm and timing in laughter reveal that human vocal plasticity falls on a hominid continuum | Communications Biology  Nature
3. To Reveal the Rhythmic Roots of Laughter, Just Tickle an Ape  The New York Times
4. Great apes (including us) have been giggling for 15 million years  Popular Science
5. Scientists Just Discovered How Long Humans Have Been Laughing, and It’s Way Longer Than You Think  VICE

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