First documented in June 2015 on Twitter. Currently active and in regular use across social platforms since 2015.
Living walls, vertical gardens. Patrick Blanc pioneer. Instagram aesthetic. CaixaForum Madrid icon. High maintenance, irrigation, plant replacement. Greenwashing vs genuine benefits. Mosswall alternatives (preserved, no water). Amazon Spheres, Changi Airport.
Sources: Academic urban planning journals, city planning documents, ArchDaily, The Urbanist, Strong Towns blog, CNU publications.
Carlos Moreno's concept: all daily needs within 15-min walk/bike
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