27 agosto 2014
Attaching a stone tip on to a wooden spear shaft was a significant innovation for early modern humans living around 500,000 years ago. However, it was also a costly behavior in terms of time and effort to collect, prepare and assemble the spear. Researchers conducted controlled experiments to learn if there was a ‘wounding’ advantage between using a wooden spear or a stone-tipped spear.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/_QUaz4x1edA/140827141605.htm
