This is an excellent video by David Holmgren on permaculture as a response to the decline of societies (over the next few generations), to climate change and extreme weather events, and as a design for rethinking suburban living. He discusses extreme weather events as 'tipping points' in climate change vs. rise in global average temperature. He discusses the probability that before we reach critical stages in both peak oil and climate change, societies will experience financial and socio-political collapse. At the end he lists the 12 principles of permaculture. Throughout he stresses that societies will have to be in a posture of continuous adaptation, rather than trying to achieve a fixed state of 'sustainability', that opportunities for adaptation are found at the margins of society, not at the centre, and that many such adaptations will be 'small and slow' responses.