The world population is projected to reach nine billion by 2040. An update on global population trends and sustainability.

Guests

  • Hania Zlotnik director, Population Division, United Nations
  • Paul Ehrlich president, Center for Conservation Biology, Bing Professor of Population Studies, Stanford University and author of "The Dominant Animal" and "The Population Bomb"
  • William Butz president and CEO, Population Reference Bureau

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