Does a blue light keep you up at night? No, it’s not an alien invasion. The city of St. Paul has been gradually replacing LED street lights suffering from an unusual manufacturer’s defect — they’re ...

Maybe you've seen them. Dozens of street lights across the Cincinnati area are giving off a purple or blue glow, casting an eerie scene on the landscapes below. The purple hues are not intentional.

As cities around the world ditch old school sodium-vapor streetlights, they’re quickly replacing them with modern LEDs. They’re supposed to be cheaper and longer-lasting than their predecessors, but ...

Why do the street lights on West Campus emit an eerie, bluish-purple color at night? Starting in 2021, Triangle area residents observed street lights turning from their standard yellow-white color to ...

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Though they're so common that we don't typically give them much thought, lights are fascinating elements of the modern world. By sending an electrical current through a conductor, extreme amounts of ...

When you flip a switch or power up your smartphone, the last thing on your mind is whether that light could be messing with your body's internal systems. Yet here's something lighting manufacturers ...