Monkeys have used stone tools for hundreds of years
Why the open web links it
New evidence shows Brazilian capuchin monkeys have used stone tools for at least 700 years to crack cashew nuts.
Linked by 7 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including mentalfloss.com, nautil.us, deepenglish.com, exploringanimals.com, ilam.org.