Scientists at Harvard have built a miniature device that can twist and tune light in real time. By rotating two stacked photonic crystals and adjusting their spacing with a tiny mechanical system, ...

Learn how to create a simple DIY LED notification light for your smartphone by repurposing an old earphone jack and an LED ...

I tested a near-infrared light device that attaches to my computer, mimics the sun, and allegedly improves mood and focus. Did it work?

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness/fitness myths. In my free time I enjoy ...

Learn how to install the Harbor Freight Solar LED Security Light quickly and easily with this step-by-step guide. Perfect for DIY enthusiasts and anyone upgrading home security. #SolarSecurityLight ...

LED face masks offer a host of transformative skin benefits—they can reduce redness, treat acne, and minimize the look of fine lines, wrinkles, and discoloration. Even better, they don’t require a lot ...