John Rawls. John Bordley Rawls (21 February 1921 â 24 November 2002) was an American philosopher,and a leading figure in moral and political philosophy. He held the James Bryant Conant University Professorship at Harvard University and the Fulbright Fellowship at Christ Church.
Hazel eyes have a higher concentration of melanin (pigment) around the eye's border, which can result in a multi-colored appearance that varies between copper and green depending on the lighting. Most people estimate that around 5-8% of the world's population has hazel colored eyes. Blue eyes are genetically recessive, and therefore much less common worldwide. Blue eyes are formed by the absence of pigments in the eye, where the blue color is formed by the scattering of light as it's reflected off the iris.
Much like gray eyes, hazel eyes may appear to âchange colorâ from green to light brown to gold. Individuals whose eyes appear to be one color closest to the pupil, another color a little farther our, and another color around the edge of the iris are likely to have hazel eyes.