Stone tools and other items from ancient sites in Kenya give a glimpse at the emergence of some key human behaviours, perhaps including a building of relationships with distant neighbours, new research says. Scientists can't be sure whether the objects were made by our species, Homo sapiens, or some close relative that's now extinct. They had found obsidianThe tools are much smaller and more sophisticated than the older, teardrop-shaped stone tools found in the same area in southern Kenya. The newer tool style, known from other sites as Middle Stone Age technology, produced smaller stone flakes for uses like scraping and points on projectiles. More advanced style of toolThe older stone tools are from 1.2 million to about 500,000 years ago.

Source: CBC News March 15, 2018 20:54 UTC