Your eyes aren’t just a pretty feature of your face. They can provide surprising insights into your personality, your health status and where you came from. We talked to three experts—doctors and ...

What determines the shade of your peepers? Experts weigh in on the rarest eye color in the world—and the genetics behind it. It’s said that our eyes are the mirrors of our souls, so it makes sense ...

"The eyes are the window to the soul," notes a timeless quote. And while your eyes also bring the world your way, the origins of eye color are fascinating and even mysterious. To help lay out the ...

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, ...