“ Spend less on gas just by changing your habits. First, don't buy a new car just for the better gas mileage. I've done a calculation to figure... (read full comment) ” 

Posted on July 14, 2008 at 7:52 PM EDT

“ Why kilobucks for <100W? With no experience whatsoever and using retail parts, I built a simple 100W peak photoelectric system for less than... (read full comment) ” 

Posted on July 14, 2008 at 7:23 PM EDT