A dragonfly perched on a reed at dusk is not just waiting for the light to fade. It is hunting in wavelengths you cannot see.

Researchers have harnessed the human eye's color-sensing strengths to give the eye the ability to distinguish between objects that differ in thickness by no more than a few nanometers, about the width ...

Animals are living color. Wasps buzz with painted warnings. Birds shimmer their iridescent desires. Fish hide from predators with body colors that dapple like light across a rippling pond. And all ...

Two male squirrel monkeys now see the world in a whole new way — in full color. Female squirrel monkeys can see in color, but male squirrel monkeys are normally red-green colorblind because they lack ...

Scientists have studied color vision by probing individual sensory cells in the human eye. The results confirm that the photoreceptor cells of the retina are especially sensitive to colors ...

The belief that dogs are colorblind, in the sense that they see the world only in black and white and shades of gray, is a common misconception. In a series of painstaking and extended measurements ...

The shift from warm summer to cool fall conditions can be stressful for many animals. Surviving each season requires a multitude of different physiological and behavioral traits that scientists are ...

There are three main types of color vision deficiency: red-green, blue-yellow, and complete. Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to ...