How to Reduce Waste and Extend the Life of 5 Most Popular Items
We all know that in order to fight pollution we have to reduce waste. The three golden R's- reduce, reuse, recycle should drive every...
How to Make a Water Powered Flashlight in 5 Steps
A water powered flashlight can save you from virtually any situation where you need light but lack battery power.
Every once in a while you...
Free Energy Generator – The Pinwheel Gravity Engine
Pinwheels have been used for many things along history. One of the most interesting uses I've ever seen is making a pinwheel act as a free energy generator, powered by gravity.
Solar Concentrator DIY – How to Build an $8 Fresnel Lens from Old TV
A solar concentrator DIY can seem like the easiest thing in the world - if someone else is doing the hard work.
A guy who calls himself "Grant...
DIY 3D Solar Panel Powers Electric Motor From 2 LED Flashlights
Ryszard says it's much more efficient to assemble solar cell this way than put them directly into light, where you'll lose a lot through reflection back into the environment. Some recently invented anti-reflective coatings may even accelerate the light's absorption into the solar cells. This is one of the advantages.
DIY: How to Make a Coca Cola-based Battery
Here's a method of producing a battery out of some Cola, salt, aluminum and copper coins. It lights a LED and it can be an interesting source of free energy!
Pedal Powered Bike Generator Building Guide
You can build a pedal powered generator if you were a puzzle fan in your childhood or if you simply love building things. So...
Rocket Mass Heater – an Eco-friendly Stove Build Tutorial
A lot has been said about Rocket Mass Heaters, and their ability to cheaply and efficiently heat up entire houses.
If there is an option...
Thermoelectric Generator: How to Build One
A thermoelectric generator is a semiconductor device that transforms the heat difference between its two layers into electricity.
It belongs to a class of materials called...
