Chimpanzees learned to make and use stone tools on their own, rather than copying humans, new evidence suggests. Subscribe to read this story ad-free Get unlimited access to ad-free articles and ...

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 ...

WASHINGTON -- A band of chimpanzees in West Africa routinely swing crude stone hammers to crack open nuts, a sophisticated use of tools the apes have been teaching to each new generation for more than ...

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 study by Alba Motes-Rodrigo at the ...