A growing series exploring what the research actually says about being left-handed -- the brain, genetics, health, careers and more. Each topic has a Quick Read and an In-Depth version.
Scientists spent decades hunting for a single left-handed gene. What they actually found — after analysing over a million genomes — was something far stranger.
From failed single-gene theories to a 1.7-million-person genome study: how modern genetics actually explains left-handedness — and why even identical twins don't always match
Quick Read: Spoiler - yes, a bit. But probably not in the way you've been told.
In-Depth: What neuroscience has learned from scanning nearly 32,000 brains.
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