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

Here's a little known fact: The human body, at any given moment, produces energy equivalent to a 100 watt light bulb. In that sense, we're always wasting our energy—energy that can be used to, well, ...

High efficiency white LEDs have advanced to the point where they can replace glow bulbs and other light sources not only as indicators, but also for illumination. While many of the claims made about ...