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Biomechanical analysis of human tool use

Andrew Zipkin’s research investigated hand pressures while using digging sticks, which early hominins may have used to access underground storage organs. Here, Kevin Hatala demonstrates the use of a digging stick.

Andrew Zipkin’s research investigated hand pressures while using digging sticks, which early hominins may have used to access underground storage organs.  Here, Kevin Hatala demonstrates the use of a digging stick.