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 ...

A capuchin monkey in Costa Rica. Scientists studying the stone-smashing habits of bearded capuchin monkeys in Brazil have found that the primates inadvertently produce stone flakes that look very ...

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 ...

We humans are nothing if not inventive. Our innovations have come to underpin virtually every facet of daily life—from what we eat to how we communicate. This ingenuity is intrinsically linked to both ...

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, ...