LEDs are tiny components found in phones, TVs, lights, and displays—but how do they actually glow? This video explains how electricity moves through a semiconductor to produce visible light. Learn how ...

LED face masks have officially crossed over from in-office facial treatments to a part of everyday skincare routines. Red light therapy masks and blue light acne LED devices are now widely available ...

Jessica was a writer on the Wellness team, with a focus on health technology, eye care, nutrition and finding new approaches to chronic health problems. They look a little robotic, but light-emitting ...