Open Source Article: Growth, innovation, scaling, and the pace of life in cities
Published online before print April 16, 2007 – Proc. Natl. Acad. Sci. USA, 10.1073/pnas.0610172104, Open Access Article, Sustainability Science, Growth, innovation, scaling, and the pace of life in cities, Luís M. A. Bettencourt, José Lobo, Dirk Helbing, Christian Kühnert, and Geoffrey B. West. [full text, PDF] “Humanity has just crossed a major landmark in its …