The document discusses several principles of ecological design including environmental ethics, the triple bottom line of social equity, environmental impact, and financial reward. It provides examples of green building projects like Dockside Green in Vancouver, BC, which used brownfield redevelopment, vegetated systems, wastewater reuse, and renewable energy. Other case studies discussed include the Harvard Blackstone Renovation and the California Academy of Sciences roof habitat project. Design criteria for ecological reference, balanced capacity, and sustainable yield are also outlined.