It may surprise you, then, to learn that bioluminescence has been detected in humans ... eyes.” The glimmering was observed in five males in their 20s who were subjected to normal light-dark ...

In tests, humans were able to recognize patterns, letters and flashing infrared signals in the dark. And the infrared lenses work even better with closed eyes, because the infrared light can ...

Humans can now see in the dark -- and even with their eyes closed -- using nanotechnology contact lenses that turn invisible infrared light into visible images, according to a new study published ...

Humans' ability to perceive color varies due to how we see under different lighting conditions. Human eyes contain two types of photoreceptors, or nerve cells that detect light: rods and cones.

In humans, the sclerae, the opaque, fibrous, protective, outer layers of the eyes, are white. While in almost all other hominids, they are dark brown. Why this difference has evolved has been the ...

Human eyes don't help much either ... So to traverse these dangerous and dark roads, here are 10 tips to keep in mind when driving after the sun goes down. We've found that headlights even ...