The City of Toronto's Atmospheric Fund has a number of reports posted. Especially informative documents include those entitled "Urban Heat Islands: Opportunities and Challenges for Mitigation and Adaptation", "Mitigating the Urban Heat Island with Green Roof Infrastructure", and "Green Roofs: Infrastructure for the 21st Century" (if only for its diagrams and flowchart).

Back in my introductory first post, I mentioned the various ways that greenroofs would affect and benefit different industries. Here's a site that goes into this: it's called Green Roofs for Healthy Cities. Check out the public and private benefits sections.

Rooftop Greening by Monica Kuhn. A very optimistic and broad article. Kuhn discusses how rooftop gardens impact municipal economy, environment, culture, and community. The one paged essay includes a bibliography, as well as a select list of Canadian green rooftop examples.

Greenroofs.com is a great resource for information on rooftop gardening. The site isn't sponsored by any commercial entity so there's no push toward so-and-so's 'revolutionary moisture barrier' or whatever, and it's written in a really relaxed, friendly way (but still bursting with info!). This site has greenroof theory, structural information, a number of community implementation case studies, and alerts for upcoming conferences.

So far, Greenroofs.com is the best overall site that I've seen on the subject. Out of my yet to be posted collection of rooftop greening sites this one is definately one of my favourites. The information, as I mentioned, is diverse. There is a fantastic linking together of the technical with more traditional or homespun information. The site represents the two main ways that rooftop greening seems to be developing: at a very grassroots level, and at a government-sponsored research level.