Population Growth

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The trends in Population Growth might include:

  • More People, More Problems
  • Slow-down in Fertility
  • Graying of a Crowded Planet

While overpopulation is a generally used term, "population growth" is preferred in this wiki, since "overpopulation" implies that the fundamental problem is simply too many people, and that solutions should focus solely on reducing fertility or lowering the number of people. "Population Growth" is a more neutral term, signifying the trend, without implying a range of solutions to problems caused by the trend.

One more precise formulation of the fundamental problem of "overpopulation" is that the size of the human population has outstripped our economic and political development, with devastating effects on our environment and the standards of living of everyone, especially the poor and the extremely poor.

More People, More Problems

The United Nations estimates that the human population will increase from 7.3B in 2015 to over 11B by 2100 CE.[1]

UN estimates of world population, using low, medium and high fertility assumptions.

Slow-down in Fertility

Graying of a Crowded Planet

UN estimates of world population, medium fertility scenario, by age groups: 0-15, 15-30, 30-45, 45-60, 60+.
Age groups.png


  1. "World Population Prospects: The 2015 Revision: Key Findings and Advance Tables," United Nations, New York, 2015

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