So I have finally got around to listening to this series of lectures, and I would say with the amount of content that is available here I personally do not feel that I am missing out on the home gardening section. One aspect that I found interesting was how Bill talked about how there are certain trees called the farmer's trees and without these trees farmer's people not be able to farm in certain environments. One tree that really got my attention was the rain tree which he says is used in one place as their sole source of water. I also love what he says about aquaculture, and I can't wait to get something like that going. And then it also really got me thinking all over again about harvesting rainwater from the roof. With a simple system we can harvest all the water we need for personal use. With a good design the water can be stored, and the quality will actually improve over time. Right now I am especially interested in a tank made of a bamboo frame and stucco.