Agriculture is most efficient when the byproducts of one culture are Recycled into another culture, an Ecological process called Permaculture. The permaculture Concept makes for sustainable living in enclosed biospheres, and is a process with many Resources and a fan club providing a Message Board, and in Britain. An excellent book, called Permaculture, A Designer's Manual, by Bill Mollinson is highly recommended by Troubled Times. Another member who is a Certified Permaculture Design Consultant explains the process for Home Design, Heat & Light, and recycling Water and Organic Matter. The Groworld Module Project explains how permaculture techniques developed in Russia can support indoor gardening.