I recently watched a documentary from the 70s or 80s titled "The Permaculture Concept" with Bill Mollison I believe his name is. You can type it in on Youtube.com and watch it. I'll find a good link to the movie online for everyone to view! He kind of coined the term permaculture I believe back then and explains how he uses an ecosystem to sustains himself without harming the ecosystem, working with nature rather than against it. Please just give it a glance, it might give you a new look on nature.