World Population Growth

J. Bradford DeLong

March 2001

  • Thirty years ago those fearful of the population explosion projected that population would reach 15 billion by 2050--if we didn't run out of food and suffer mass starvation beforehand.
  • Today projections of human population in 2050 are much, much smaller: 9.3 billion.
  • Birth rates have come down amazingly rapidly in much of the developing world.
  • Slower rates of population growth will mean higher capital-output ratios, faster growth, and richer developing economies.

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