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789 Scientists think they’ve cracked the mystery of human right-handedness

ScienceDaily
ScienceDaily · 05/18/2026 04:15 EDT

A new study suggests humans became overwhelmingly right-handed because of two major evolutionary shifts: walking on two legs and developing much larger brains. Researchers found that as human ancestors evolved, their right-hand preference steadily intensified — transforming a mild tendency into one of humanity’s most distinctive traits.

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