| gc.ca | CMHC: Greenbacks from Green Roofs: Forging a New Industry in Canada |
| cityofchicago.org | City of Chicago: City Hall Rooftop Garden |
| edcmag.com | EDC Magazine: Green Roofs: Stormwater Management From the Top Down |
| greenroofs.org | Green Roofs for Healthy Cities |
| hadj.net | Northwest EcoBuilding Guild: Green Roof Project |
| earthpledge.org | Earth Pledge Green Roofs Initiative |
| djc.com | Seattle Daily Journal of Commerce : Green Building Starts at the Top |
| cleanrivers-pdx.org | City of Portland Environmental Services: Ecoroof Program |
| cityfarmer.org | Green Roofs Cool City Rooftop Gardens in Chicago to Fight Smog, Heat |
| nationalgeographic.com | National Geographic News: Plant-Covered Roofs Ease Urban Heat |
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