If your old incandescent Ryobi flashlight bulb is dead, it's actually possible in most cases to swap it out for an LED.

Modern LED technology promised safer roads. Instead, it's creating a blinding menace that regulators refuse to address.

DeWalt has manufactured some of the best tools around — including circular saws, impact wrenches, and comprehensive tool sets — for over a century. It has also established a reputation for itself by ...

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 ...

Discover why your favorite cat videos don't leak out of optical fibers. A transparent material, such as glass or water, can actually reflect light better than any mirror. All you have to do is look at ...