Did you ever hear that blood is actually blue inside your body, but turns red instantly on contact with air? Learn more on this Moment of Science.
If you look at a bright lamp and then close your eyes, why can you still see the light?
We don't perceive color in our peripheral vision because we have no cones, which sense light frequencies, on the outer edge of our retina.
Investigators shine a light on crime scenes mysteries with the help of luminol—a luminescent chemical that reacts with blood.
Contact lenses bring objects into closer and clearer focus than glasses.
The light in Earth's atmosphere may reflect signs of extraterrestrial life.
Hawkmoths not only have excellent night vision, but they can distinguish between colors in the dark.
Summer is nearly here. Ever wonder why moths fly toward bright lights? Find out on today's Moment of Science.
Your old Super Soaker was pretty cool, but it didn't have precision like this.
Researchers have found that depending on the season, the eyes of Arctic reindeer change from gold to blue.