Permaculture is one of those great TreeHugging principles that integrates everything in a balanced, living system, takes many cues from Mother Nature, and works great when executed properly. It's a zero-waste cycle, a green system that defines 'solar energy' with sun (but not solar panels) and 'carbon offsets' with soil instead of credits printed on paper. It's a super-fascinating, super-green way to grow food, build systems, and live green. Here's a tour of the 12 guiding principles of permaculture.
Photo credit: e pants via Flickr