Green eyes are not actually green. There is no green pigment anywhere in the human body. Every green iris contains only melanin, the same pigment that colors skin and hair, plus a faint golden…
Green eyes are the rarest eye color on Earth, shared by less than two percent of humanity. For generations, the story of where they came from seemed settled: Ireland, Scotland, and the misty corners of the Celtic world. It felt obvious, even intuitive. A team of researchers, however, decided to stop assuming and start measuring. … Read more