there are light bulbs that have batteries and every time you turn on a lamp that contains one of these bulbs, you charge the battery.

The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...

PureWow editors select every item that appears on this page, and some items may be gifted to us. Additionally, PureWow may ...

A multimeter might look intimidating, but learning to use this simple electrician's tool will come in handy during a number of every day tasks.

Unlock the secrets to creating a sustainable power source with our step-by-step tutorial on making a free energy light bulb ...

In this informative video, we explore the fascinating concept of free energy by demonstrating how to power 220v light bulbs ...