WASHINGTON — Our hands can reveal a lot about how a person has lived – and that's true for early human ancestors, too.
WASHINGTON — Our hands can reveal a lot about how a person has lived – and that's true for early human ancestors, too. Different activities such as climbing, grasping or hammering place stress on different parts of our fingers. In response to repeated stress, our bones tend to thicken in those areas.To study how ancient humans used their hands, scientists used 3D scanning to measure and analyze the bone thickness of fingers.
Both ancient human species showed signs of simultaneously using their hands to move around – such as by climbing trees – as well as to grasp and manipulate objects, a requirement to being able to make tools. 'They were likely walking on two feet and using their hands to manipulate objects or tools, but also spent time climbing and hanging,' perhaps on trees or cliffs, said study co-author and paleoanthropologist Samar Syeda of the American Museum of Natural History.
Human Ancestors Used Their Hands To Both Climb Trees And Make Tools New Study Shows
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