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Generate shadows without trees: vegetable awnings, a new way to generate shadows in the city.
(www.singulargreen.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
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.