From local dimming and HDR brightness to Mini LED, RGB LED, and Dolby Vision 2, we answer reader questions about modern TV picture quality and what display technology matters most in 2026.

Gold nanorods are promising photocatalysts that can use light energy to drive chemical reactions—such as converting CO₂ into ...

Sometimes the simplest way to understand the cause-and-effect nature of automation is to start with the effect. Scenes are ...

Why does light carry energy even though it has no mass? This video explains the real physics behind photons, energy–momentum relationships, and how light can transfer energy and momentum without mass.

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

Star-favored, board-certified aesthetics physician Dr. Glenicia Nosworthy explains how to choose the right high-tech tool for every skin concern. By Natalie Alcala, Danielle Directo-Meston, Erin ...

Many motorists seem to treat traffic lights as optional, barreling through red lights without a care in the world. In a bid to clamp down on red light runners, authorities in Florida have started ...

Author AJ Jacobs, who previously wrote about living for 24 hours without plastics, recently tried a different fast: life without artificial intelligence. He set his sights on 48 hours, and launched ...

Last night, the 75-foot Norway Spruce was lit at Rockefeller Center. According to its website, The Rockefeller Christmas Tree has over 50,000 multicolor LED lights (that’s five miles of string lights) ...

If you live in the northern U.S., you may not have to travel further than your own backyard to witness this cosmic spectacle Ross Harried/NurPhoto via Getty The northern lights may be visible in parts ...

As geomagnetic storms continue, forecasters predict a good chance of auroras in northern U.S. states for a third time this week Getty The northern lights may appear for a third time this week as ...