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Continue to ChatAs people flock to urban centers where ground space is limited, cities with green walls and roofs and skyscraper farms offer improved health and well-being, renewable resources, reliable food supply, and relief to the environment. - Diane Ackerman from https://whatsmyquote.com/quote/as-people-flock-to-urban-centers-where-ground-space-is-limited-cities-with-green-walls-and-roofs-and