How to Promote Sustainability

Image of waste bin overflowing with bags of trash. Earth's population is projected to peak at 8 to 12 billion people by 2050 with most population growth in urban areas. Many cities will struggle to accommodate rapidly increasing populations, and the spread of cities into rural areas will alter bio-geochemical cycles, hydrological systems, climate, wildlife habitat, and biodiversity. Research on the changing geographical distribution of populations, the processes shaping different settlement forms, and the sustainability challenges facing an increasingly urbanized population are critical to understanding the challenges facing a more crowded world. (NRC 2010, p.3).