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Generate shadows without trees: vegetable awnings, a new way to generate shadows in the city.
(www.singulargreen.com)
I found these kind of cool as an idea, as they can be added rather easily to existing cities and provide some greenery without taking up space, while providing shade:
That doesn't seem like a great construction method. These seem difficult to maintain which imperils how long thoae awnings and cables will last.
But still a green roof strategy on a more structurally sound awning though? I would be down with that.