Video: Kanzi now makes his tools, just as our ancestors may have made them, two-and-a-half million years ago -- by holding the rocks in both hands, to strike one against the other.
Video: Kanzi sekarang membuat peralatannya, mungkin sama dengan buatan nenek moyang kita, dua setengah juta tahun lalu -- dengan memegang dua buah batu, lalu memukulkannya satu sama lain.