. "4 How and Where Will 10 Billion People Live on Earth?." Understanding the Changing Planet: Strategic Directions for the Geographical Sciences. Washington, DC: The National Academies Press, 2010.
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Understanding the Changing Planet: Strategic Directions for the Geographical Sciences
FIGURE 4.1 Depending on fertility and mortality rates, total world population could reach nearly 12 billion by 2050, but could be as low as 7.9 billion. SOURCE: United Nations.
FIGURE 4.2 Percentage of urban population by region, 1950-2050. SOURCE: United Nations.
