Okay I am no tree hugger, but with gas prices being so freaking high, and the fact that I am a homeowner, I have been looking into alternative energy sources. I found this list of DIY projects from everything to using solar energy to powering your car on veggies ;) I got interested in this when I watched a show on FX called "30 Days" which featured a couple who decide to live off the grid for a month. It was interesting to see how they did it and what sacrifices they had to make to be self sufficient. It is definitely beneficial to read, especially in places hit by rising energy costs and areas of natural disaster.
Check it out here