Human eye colour is one of the most striking and memorable features, ranging from deep brown to icy blue, rare green, and shifting hazel tones. Behind this diversity lies a fascinating interplay of ...

A 2008 study was the first official research noting that a single genetic mutation from less than 10,000 years ago kicked off blue eyes. Fifteen years later and we're still enamored with the concept ...

The colored part of the eye surrounding the pupil is called the iris. It automatically regulates the amount of light entering the eyes by regulating the size of the pupil. Light is the primary ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

You probably know a number of people who have blue eyes (and you may possess them yourself), but just about 10,000 years ago, blue-eyed folks were unheard of. For a long time, all humans had brown ...