Permaculture in the city: best practices for sustainable, renewable resources for housing, energy production, food, transportation, sanitation, and health, design of systems for sustainable living, voluntary simplicity and other topics related to urban living in the post peak oil age. The word "permaculture" was coined by Dr. Bill Mollison and David Holmgren to describe sustainable agriculture practices but has since expanded to include all aspects of sustainable culture. Topics might include ethics, community building, water and energy conservation practices, home building, organic container and intensive gardening, edible landscaping, food preservation, recycling - these are just examples.