Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...

When evolution skeptics want to attack Darwin's theory, they often point to the human eye. How could something so complex, they argue, have developed through random mutations and natural selection ...

Now, research has revealed these stunning birds are also sending secret color signals that are invisible to human eyes. Plumage and ... areas when viewed under blue and ultraviolet, or UV, light ...

Human eyes are actually spheres ... and the cones see the colours: red, green and blue, and all the millions of shades in between. The rods and the cones send information about shapes and colours ...

Human eyes are actually spheres ... white and shades of grey… and the cones see colours: red, green and blue, and all the millions of shades in between. The rods and cones send information ...