Thought this might be of interest:

Sustainable Living Festival
17th - 19th February 2006
Federation Square, Melbourne

FREE ENTRY

The Sustainable Living Festival is a celebration and showcase of leading examples of sustainable living in Australia, drawing together a wide variety of displays, exhibits, artworks, performances and demonstrations to inspire a sustainable culture

http://www.sustainablelivingfestival.org.au/

Check out the site to see what it's all about, what will be there and other general info