Professor Lars Schmitz joins WIRED to guide us through a giant tree of life mapping the evolution of eyes in the animal ...

A new surgical procedure to permanently change eye color is gaining traction in the U.S. But many ophthalmologists fear ...

Every change had to confer a survival advantage, no matter how slight. Eventually, the light-sensitive spot evolved into a retina, the layer of cells and pigment at the back of the human eye.