Once upon a time, buying a lightbulb meant choosing an incandescent one of between 25 and 100 watts, depending on how bright you wanted the light to be and the fixture you were putting it in. You ...

Light pollution blues: photographs of London taken on board the ISS in 2012 (left) and 2020 (right). The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et ...

What if you could point something at your skin — in the comfort of your own home, no less — and decrease skin problems like wrinkles and acne? That’s the promise of light wands. Light therapy wands ...

Upon a glance in the mirror as you use an LED mask, it might appear that you’re wearing a serial-killer costume. While obviously it makes sense to laugh about the fact that, yes, you look a little ...

LED headlights consume less battery power than halogen or HID bulbs, typically using 15–25 watts compared to 55–65 watt ...

LED lightbulbs have slashed the amount of energy we use to light our homes. New data illustrate just how much. Jon covers artificial intelligence. He previously led CNET's home energy and utilities ...

A series where we find out which products the professionals (who really know what they’re talking about) actually use and really stand behind. Read more here. Maybe you’ve seen an influencer gliding ...