Are livable cities just a dream?

[The following talk was presented at the Climate Change | Social Change Conference in Sydney, April 2008.]

When one sees a modern city from the air, especially at night, it is a truly awe-inspiring spectacle. What always strikes me is the immensity of the project, a testimony to the power and creativity of human beings. However, on the ground and actually living and working in this wonder, things are quite different and the social and ecological problems crowd in and fill one's view.