Jahren introduces the acronym “OECD,” or the Organisation for Economic Co-operation and Development. The OECD references the highly developed countries located in North America, the European Union, Israel, Japan, New Zealand, and Australia. Over a billion people live in these countries, most of them in urban areas: “Cities are the very definition of more—hot spots of humanity visible from space” (22). The “poorest of the poor” also number over a billion and tend to live in rural areas (23), functioning without electricity. For those living in poverty, the slums within an urban area can still provide more resources in terms of jobs, wages, and access to electricity. Most of the world’s population now lives in urban areas, a shift that accelerated during the 20th century and continues into the 21st.