The Vales are sustainable housing pioneers, with their 1975 book "The Autonomous House" (new edition in 2002: "The New Autonomous House: Design and Planning for Sustainability"). The Vales developed the NABERS building rating system for the Australian Government. Work is under-way to adopt NABERS for measuring the energy efficiency of computer data centres.
In their talk they will look at how Canberra would be if its citizens were to adopt a sustainable ecological footprint.
Last week the ACT Government held a Canberra 2030 Planning Workshop. My suggestion was to triple Canberra's population (and density) to 1 million people. With the use of sustainable technologies, the population increase could be implemented while reducing stresses on the environment and using no more land.