12 junio 2015
Charcoal samples enable remarkably accurate estimates of 40,000 to 45,000 years ago for the earliest Upper Paleolithic stone tools in the Near East. The toolmakers appear to have achieved a division of labor that may have been part of an emerging pattern of more organized social structures.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/J-7Dr6M9n_0/150612131628.htm
