The human-powered helicopter probably doesn't look like what you'd expect. It doesn't resemble a typical helicopter at all. In fact, it looks like it's built using K'NEX. They actually used carbon fiber tubing, styrofoam and a lot of superglue — so, it's not too far off. Looking at it, you'd ...

The worst part about flashlights is their reliance on having batteries or a fresh charge. That's all a thing of the past with the Hydralight. This incredible new light uses salt water as a source of power, thanks to its hydracell energy cells. The hydracell just needs to be dipped in the water ...

If you've ever wondered what the world's brightest spotlight looks like, you don't have to wonder anymore. This homemade flashlight light bar uses ten 100W LED chips to produce an estimated 90,000 Lumens of light. Check out the insanity below. Kudos to Daniel Riley on the impressive work. ...