Any animal’s eye color is determined by its levels of two melanin pigments: eumelanin, which makes brown-black, and ...

Red is the rarest hair color, but to understand why that’s the case, you need a basic grasp of the science. There’s a lot ...

We can see about a million different colours Most humans are trichromats, which means our eyes have three different types of cone cells: red, green or blue, able to detect about 100 shades each.

Green light is in the middle. Our eyes only detect three colours: red, green and blue. By combining these we can perceive many different colours Our eyes only detect three colours: red ...

The animal's eyes change from a golden colour to a deep blue as summer fades to winter, helping it to see in dramatically different light levels. The part that changes colour is called the tapetum ...

Radiation within the visible spectrum can appear black if it is low in power – more specifically, lower in power than its ...

Although the eyes of garden snails can't focus or see colour, they would just about be able to make out this other snail moving past, or a predator approaching. The snail's ability to discern ...

See, we like to think there’s a rainbow of eye color options out there—violet, blue, gray, hazel, green, brown, near-black—but scientists believe that they’re all slightly different ...

Green light is in the middle. Our eyes only detect three colours: red, green and blue. By combining these we can perceive many different colours Our eyes only detect three colours: red ...