LED lights have taken over modern homes and workplaces. They're energy efficient, affordable, and marketed as the future of ...

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 times ...

Matt Fuchs lives in Maryland and writes about health, science, and technology. A car at night with headlights on. Matt Fuchs lives in Maryland and writes about health, science, and technology. A few ...

Somewhere between childhood nightlights and adulthood phone screens, darkness lost its place. The average bedroom today glows. Whether it’s a streetlamp slipping through the curtains, the steady glow ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? At the simplest level, different colors of light have different wavelengths.

Forget harsh bleach—scientists have discovered that powerful blue LED light can erase yellow stains from sweat, food, and oils without harming delicate fabrics like silk. By harnessing oxygen in the ...