What are some new and potentially useful alternative energy sources?

I'm looking for something besides the usual fuel cells, solar collectors, photovoltaic cells, waste-to-energy, hydro-electric, etc. I think I read somewhere about harnessing body heat for energy. Anyone know anything about that or can give me some links on that or on other developing technologies for alternative sources of energy away from gasoline and natural gas? Wind mills is included in the "etc.".

Public Comments

1. here in the state i live in they are starting to use windmills to generate electricity.
2. The biggest source of body heat that I know of right now is spuing from the mouths of this administeration. If we could harness that we could power the the world. Hey? Isn't that kind of what they're trying to do. OH...maybe I ment over power? The problem really could be solved, if the powers that be were really concerned. The greed runnith over.
3. WINDMILLS DO NOT WORK THAT WAY!
4. sea/ocean waves.
5. The ground temperature several feet beneath your home is fairly constant at around 60 degrees Fahrenheit, give or take a few degrees. Circulating water or some other liquid through this region and returning it to your house, delivers to you a source to heat or cool your home to 60 degrees, even if the outside temperature is -10 degrees, or +120 degrees. Now you have solved most of your heating/cooling problems, and all you need is to let the outside air raise the inside temperature from 60 to 74 degrees in the summer, and install a simple secondary heating system (enough to only raise the temperature about 14 degrees) in the winter. Added insulation will even reduce further the need for the winter heat supplement.