The study, published in the Proceedings of the National Academy of Sciences (PNAS) of the United States, reveals that yellow-breasted capuchin monkeys in Brazil inadvertently produce sharp stone ...

This artifact was used for scraping fur from animal hides. For European and American Stone Age peoples, end scrapers served as heavy- duty scraping tools that could have been used on animal hides ...

Is this Stone Age glue? IAN: It is a Stone Age glue and ... of people at the time and how well-adapted they were to their environment. This clip will be relevant for teaching History and Social ...