That's because Popular Science recently published step-by-step instructions on how to create your very own flashlight that runs on dead batteries.

Adafruit's DIY enhancement for Converse All-Stars takes customized kicks to a whole new level with the science of electroluminescence.

Maybe the best thing about this DIY project is its name: the Joule Thief. It’s a tiny LED flashlight that runs off dead batteries, eking out the last drops of voltage from a dead AA and throwing ...

Last year, we saw perhaps the brightest flashlight ever made, a DIY 1000W beast composed of ten different lights which can throw out a combined 90,000 lumens. How do you improve on that? You make ...

Of course there's more to a good flashlight than just brute-force lumen power, but even the beefiest Maglites top out at around 700. So how does 90,000 lumens look?