Very Green Roofs
Can you plant a roof with sedums and sempervivums and other green roof succulents AND still have room for solar panel? Well, they’re doing the research in Oregon, and the picture seems to imply they’ve already reached an answer.
Heather Noddings/Portland State Vanguard
Eco-roofs: Eco-roofs are being studied at PSU through a grant from the National Science Foundation.