Photo: Newtown Graffiti / Creative Commons In our conventional, resource-intensive food and building industries, 'waste-free' may seem like an alien concept, which makes projects like Australia's Greenhouse all the more impressive. Touted as a waste-free, strawbale structure built and operated sustainably on Sydney's waterfront, the Greenhouse is also a restaurant that serves local produce that is processed on-site -- they churn their own butter, grind their own flour, roll their own oats -- and they compost all of their organic waste on-site too. ...Read the full story on TreeHugger