About 10% of people worldwide are left-handed. A 2020 met... | funfact.wiki | funfact.wiki
About 10% of people worldwide are left-handed. A 2020 meta-analysis covering more than two million people estimated the best overall prevalence at 10.6%—confirming the familiar figure of roughly one person in ten.
Even identical twins with the same genes can differ in handedness: one may be left-handed and the other right-handed. Such discordance in twin studies shows that although genes influence handedness, they do not determine it alone.
Humans are the only primate with obvious white sclera. Apes have darker sclera that hide gaze direction, but human eyes broadcast where someone is looking. The Cooperative Eye Hypothesis says this 'eye that cannot lie' helped early coordination and group hunting.
Humans perceive large eyes and small noses as baby traits, triggering cuteness. This is 'baby schema.' Domesticated animals retain these traits into adulthood—and so do humans, suggesting we domesticated ourselves.