This is an interesting video on Permaculture. Geoff Lawton is a permaculture consultant and designer. He has taken over and continued the permaculture work after Bill Mollison retired. His website is Permaculture Research Institute of Australia .
I find Permaculture so intriguing.
The definition of Permaculture by Permaculture Solutions.
What is Permaculture?
Permaculture is a method for designing sustainable, human-supporting landscapes that mimic the operation of natural ecosystems. By linking the different parts of each system in ecologically sensible ways, permaculture achieves high yields for low energy inputs while actually building fertility over successive seasons. For some, permaculture means a backyard garden that for relatively little work supplies an abundance of organically produced food all year round. For others, permaculture means a drought and flood-proof rural property ensuring food, water and energy security into the coming decades.