Some monkeys in Panama may have just stumbled into the Stone

One group of capuchins uses stone tools, but neighbouring groups do not – suggesting primates - including us - might enter the Stone Age simply by chance

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Panama , Thailand , United States , America , Brendan Barrett , , Stone Age , South America , Revolution , Monkeys And Apes , Monkeys , Capuchin , Tools , Behaviour , Animals , Primate , Humans , Intelligence ,