Light-emitting diodes are front and center for many of our digital experiences. Every modern phone and tablet you look at uses LEDs in its display. It’s worth knowing how these work. In short, LEDs ...

British inventors began experimenting with electric lighting in the 1830s, working on so-called arc lamps, while other scientists around the world focused on developing a functioning incandescent lamp ...

Switch to solar with a system built for you. Solar lighting mainly refers to outdoor lighting that’s powered by natural energy from the sun. There are indoor applications, but they’re just starting to ...

Red light therapy is an anti-aging treatment that dermatologists love, so we asked them about how it works, its benefits and what devices to try.