Nobody Knows Why 1 in 10 People Are Left-Handed

Roughly 10% of humans are left-handed across cultures and millennia, yet evolutionary biology still cannot fully explain why this minority persists.New polygenic GWAS studies keep mapping risk variants without solving the evolutionary riddle, while left-handed athletes keep the puzzle visible and shareable.Edward and Lily strip away the hype, follow the evidence, and explain what the story actu…