This must be my favourite site at the moment. The City of Portland Oregon has commissioned a competition for new urban developments where Nature is the number one design criteria. Check out the designs and the design guidelines. Truly inspiring.]
The Grass Roof Company
My other favourite website is John Little's. He is trying to get wildlife not just on roofs but on council estates in London. His work in schools in Essex is exemplary. And we are writing a DIY green roof guide together.
Work Related Websites
European Federation of Green Roof Associations
The Green Roof Consultancy
World Green Roof Congress 2008