Like most human traits, blue ... eyes is related and some weird facts about the human body. Keep reading for everything you ...

but they occasionally pop up in other populations. Green eyes get their color from a unique mix of light melanin and Rayleigh scattering, the same effect that makes the sky look blue. Perhaps one ...

All blue-eyed people have one ancestor in common, born around 6,000 to 10,000 years ago. Blue eyes are caused by a gene mutation. For years, researchers had searched for it on the OCA2 gene.