Was Science Wrong About Being Right?

Much of what defines us as a species is all in our heads.

First and foremost, we’ve got these big, powerful brains, and small faces tucked underneath a skull that expanded to house our most precious organ.

There’s another trait that researchers once assumed was a Homo sapiens hallmark, based in the brain but most obvious in the upper limbs: Nine out of 10 humans are considered right-handed.

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