I would never have imagined installing my Solar Panels on a Pergola instead of my roof but I love the idea! It would provide shade, and power all at once. I really enjoyed this slide-show about how to choose the right Solar Panels for your home set-up, if you are as into Solar power as I am you should check it out!
Lucid Energy has developed a renewable energy system that makes use of water moving through pipelines. The company's LucidPipe Power System converts pressure in water pipelines into electricity. They have a patented, lift-based .
Titanium Saw Ring. It's a simple but elegant-looking ring made of titanium. But unlike all other rings, this one contains a saw and handcuff shim pick combination tool which is completely hidden from view when worn.
How to Make a Home Biogas Digester (Maybe) - Do It Yourself - GRIT Magazine