World Population

World Population

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

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

Guests

William Butz

president and CEO, Population Reference Bureau

Paul Ehrlich

president, Center for Conservation Biology,
Bing Professor of Population Studies, Stanford University and author of "The Dominant Animal" and "The Population Bomb"

Hania Zlotnik

director, Population Division, United Nations

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