NEW YORK -- Call them knockoffs. Rock-smashing monkeys in Brazil make stone flakes that look a lot like tools made by our ancient ancestors. Scientists watched as Capuchin monkeys in a national park ...

For more than half a century, scientists have debated whether Paranthropus boisei, an extinct human relative known for its ...

“The hand shows it could form precision grips similar to ours, while also retaining powerful grasping capabilities more like ...

While smashing stones together, capuchin monkeys in Brazil accidentally created sharp-edged flakes that resemble cutting tools. Iran ally issues new global threat Bill Maher admits he was wrong about ...

CC0 Usage Conditions ApplyClick for more information. White-faced capuchin monkeys in Panama’s Coiba National Park habitually use hammer-and-anvil stones to break hermit crab shells, snail shells, ...

Kanzi was not the first great ape to learn how to communicate with humans using symbols. Koko the gorilla and Washoe the chimpanzee learned signs that were adapted from American Sign Language. But ...

Have you ever found yourself in a museum's gallery of human origins, staring at a glass case full of rocks labeled "stone tools," muttering under your breath, "How do they know it's not just any old ...

Oldowan stone tools made from a variety of raw materials sourced more than six miles away from where they were found in southwestern Kenya. In southwestern Kenya more than 2.6 million years ago, ...