I thought about where to really post this. I'd like to see the direct of this thread move towards sustainability even if you live in the city, apt whatever. This includes ways to make things, save money and generally survive or live frugally.
I thought this was great info and something I will most likely try. During the winter my electric bills are easily 400-500 a month to heat several buildings.
This would also be great for a greenhouse.
http://www.permies.com/wood-burning-stoves.html