When you flip a switch or power up your smartphone, the last thing on your mind is whether that light could be messing with ...

Sometimes, if you're out shopping late at night (and perhaps lost where you parked your car), you might notice a blinking blue light in the parking lot. This isn't a standard parking lot light, but a ...

Q. What do the flashing blue lights off to the side of the freeway mean? They flash at the end of long poles, perhaps near construction materials. There is one at the Pacific Coast Highway exit on the ...

Police cars have various lights they use to communicate with others on the road, but at times it can be hard to tell what exactly they're conveying. Red and blue flashing lights are standard and we ...

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.

Blue light has acquired a dubious reputation in recent years, frequently blamed for everything from disrupted sleep patterns to digital eye strain. This high-energy light, emitted abundantly by our ...

We’re staring at our devices more than ever, and besides eating up our time, they’re giving off tons of light. Blue light has gotten an especially bad rap, but that’s not quite fair: It’s just one ...