Light-emitting diodes (LEDs) are so ubiquitous that it's easy to forget just how much society relies on these underappreciated technological wonders. Yet, the history of the LED goes back further than ...

SPRINGFIELD, Mo. (KY3) - You’ve probably noticed more colored headlights on area roads. And, our viewer Charolette did too. She wants to know, are those bright blue headlights legal? The answer is no.

No you're not imagining it. Headlights have gotten brighter, and people driving on dark roads since the start of Daylight Saving Time have felt the impact. Before LED lights were introduced, many auto ...

Though we’re still galaxies away from having real lightsabers, the wonderful people in charge of Star Wars merchandising has given us the next best thing-LED flash light lightsabers. The Star Wars ...

Do LED lights cause cancer? Can they really reduce crime? One kid is so concerned about LED streetlights that he called Mayor Rahm Emanuel. Chicago sixth-grader JJ Nnawuchi loves looking at the stars, ...

LEDs work by converting electrical energy into photons in a layer made of a semiconductor. Research into new semiconductor materials is key not only to further improving the energy efficiency of these ...

Light pollution blues: photographs of London taken on board the ISS in 2012 (left) and 2020 (right). The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et ...

This illustration demonstrates how bright blue LED light, shone through its complementary yellow phosphor, yields white light. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of ...

Among the more puzzling cosmic phenomena discovered over the past few decades are brief and very bright flashes of blue and ultraviolet light that gradually fade away, leaving behind faint X-ray and ...