Untrained, captive orangutans can complete two major steps in the sequence of stone tool use: striking rocks together and cutting using a sharp stone, according to a new study. Untrained, captive ...
Captive orangutans can use stone tools without minimal direction from humans, researchers reported today. Besides an affirmation of orangutan intelligence, the finding has implications for ...
When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often accidentally create sharp flakes of rock that look like the stone cutting tools made by early humans.
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