Support WBURScientists Are Amazed By Stone Age Tools They Dug Up In KenyaPlay01:59Download AudioRhitu ChatterjeeMarch 15, 2018 ShareAssortment of Early and Middle Stone Age tools found in the Olorgesailie Basin, Kenya. The tool at left is a hand axe. (Jay Reed/NPR)
Assortment of Early and Middle Stone Age tools found in the Olorgesailie Basin, Kenya. The tool at left is a hand axe. (Jay Reed/NPR)