Early human ancestors used advanced techniques to craft a handaxe from the femur of a hippopotamus 1.4 million years ago, according to a new study.
원문출처 : https://www.cnn.com/2020/07/17/world/ancient-tool-hippo-handaxe-scn-trnd/index.html
원문출처 : https://www.cnn.com/2020/07/17/world/ancient-tool-hippo-handaxe-scn-trnd/index.html