22 junio 2015
New work on the skeletal remains of scarlet macaws found in an ancient Pueblo settlement indicates that social and political hierarchies may have emerged in the American Southwest earlier than previously thought. The findings suggest that the acquisition and control of macaws, along with other culturally significant items like chocolate and turquoise, may have facilitated the development of hierarchy in the society.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/N5dvUSEZFnA/150622154550.htm
