“…From local to global levels, there are options, as we discuss, that head to very different outcomes, namely "Stairway to Heaven or Highway to Hell" [53] (Chapter 8). The second issue relates to smart cities led by big digital players, surveillance approaches, and globally monopolistic districts [59,61]. They might deliver social divides with gated communities, where the liveability of the well-offs is protected, and the predatory disposal of waste in non-protected areas by actors able to exploit monopolistic positions and possibly to mobilize illegal, if not criminal, channels [54].…”