Cones outnumber rods only in the center of the retina, which is the area of greatest density. It is also the area most ...

What color is moonlight typically, and what other colors can moonlight look like from our perspective on Earth?

As well as explaining what makes the blue shark so darn blue, it also appears that through the same mechanism, that blue can ...

Blue sharks possess a secret hidden in their skin: a sophisticated arrangement of microscopic crystals and pigments that ...

The blue shark ( Prionace glauca) might be more than its name. Scientists investigating the sleek ocean predator's skin ...

mid-wavelength cones specialize in green, and short-wavelength cones detect blue. Related: What color is the universe? When light hits our eyeballs, these three receptors take in information about the ...

Gastrointestinal cancers remain among the most common forms of cancer. While endoscopy has become a cornerstone of cancer screening and diagnosis over ...

Adam Sherwinski teaches ciLiving host, Jaclyn Friedlander what causes the different colors of fireworks and demonstrates a ...

Star-favored, board-certified aesthetics physician Dr. Glenicia Nosworthy explains how to choose the right high-tech tool for ...

Unlike typical infrared night-vision goggles, these contact lenses do not require a power source — and they enable the wearer to perceive different infrared wavelengths that show up in various ...

Green light therapy has shown promise for easing the symptoms of migraine. Discover how it can calm your brain, where to find it, and how and when to use it.

Most people who are allergic to cats aren’t reacting to the fur—they’re reacting to a protein in cat saliva called Fel d 1.