As people flock to urban centers where ground space is Leave a Comment / By Aubrey Vilches / February 24, 2018 “As 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 Rating Please wait... Related PostsIt's difficult to believe that people are stillOn tour people know that if they ever ask me what IPeople may think I'm crazy but one of the ways I likeWhile some people may think being a chef only entailsYou entertain people who are satisfied