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Study finds early human ancestors' hands were versatile, used for both climbing and tool-making.
A new study shows that early human ancestors, including Australopithecus sediba and Homo naledi, used their hands for both climbing and making tools.
Scientists used 3D scanning to analyze bone thickness in fossilized hands, revealing stress patterns from various activities.
This suggests early humans were versatile in their hand use, challenging the idea of a simple evolutionary progression from "ape-like" to "human-like" hand functions.
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El estudio encuentra que las manos de los primeros antepasados humanos eran versátiles, utilizadas tanto para escalar como para hacer herramientas.