1 Subjects: “...Overpopulation...”

2 Subjects: “...human overpopulation taboo...”

3 “... directions: to the changing climate, to environmental degradation, to overpopulation, to geopolitics...”

4 “... (water pollution, coastal flooding, climate change, overpopulation, urban planning, waste water, plastics...”

5 “... is the most industrialized, is overpopulated. Mexico City pours millions of cubic meters of “blackwater...”