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.

Ultraviolet light is a type of electromagnetic radiation that makes black-light posters glow, and is responsible for summer tans — and sunburns. However, too much exposure to UV radiation is damaging ...

Before we dive into the effects of light pollution and how to fix it, let’s talk about exactly what light pollution is and what causes it. Less than a third of the worldwide population (and less than ...