martes, 13 de enero de 2015

World’s oldest butchery tools gave evolutionary edge to human communication

Two and a half million years ago, our hominin ancestors in the African savanna crafted rocks into shards that could slice apart a dead gazelle, zebra or other game animal. Over the next 700,000 years, this butchering technology spread throughout the continent and, it turns out, came to be a major evolutionary force, according to new research from UC Berkeley, the University of Liverpool and the University of St. Andrews, both in the UK.

Combining the tools of psychology, evolutionary biology and archaeology, scientists have found compelling evidence for the co-evolution of early Stone Age slaughtering tools and our ability to communicate and teach, shedding new light on the power of human culture to shape evolution.

Reported today (Jan.13) in the journal Nature Communications, the study is the largest to date to look at gene-culture co-evolution in the context of prehistoric Oldowan tools, the oldest-known cutting devices. [...]

Actualización 14-01-15: Aprendimos a hablar a golpes de piedra - / Link 2 (EUROPA PRESS)
El uso de primitivas herramientas para despiezar carne empujó el desarrollo del lenguaje humano hace 1,8 millones de años...

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Actualización: Aprendimos a hablar a golpes de piedra