Blue light usually comes from the sun but also from digital screens and LED lights. Some experts believe artificial sources may be causing eye damage in humans, but animal studies are inconclusive.

The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et al/Science Advances/CC BY 4.0) The shift to LED street lighting is producing more blue-light pollution – an ...

The first LEDs only emitted red light; it wasn't until 1972 that George Craford developed the yellow LED, with a green LED following in the same decade. The blue LED can also trace its history ...

From screw-in bulbs and colorful LED strips to table lamps and outdoor string lights, check out the best smart lighting we've tested for illuminating your space and setting the mood. I'm PCMag's ...