MADISON, Wis., Nov. 12 (UPI) — Chimpanzees living in a harsh African environment and using stick tools offer scientists new insight into early human behavior, U.S. researchers said.
Researchers found evidence of tool use among chimps living in western Tanzania’s Ugalla Forest Reserve to harvest tubers, roots and bulbs, the University of Wisconsin-Madison said in a news release Monday. Their study was published in Proceedings of the National Academy of Sciences.