New study on monkeys using stone tools raises questions about evolution

(The Hill) – Monkeys in modern-day Thai forests create stone artifacts uncannily similar to those crafted by early humans — challenging the established narrative of human cultural evolution. A new study published on Friday in Science Advances suggests the possibility that a critical hallmark of human tool use happened by accident — potentially blurring the line between tool use by early humans and our primate relatives. The Thai monkeys p