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World Population day was July 11, 2010. Did you even know that? Environmentalists and human rights advocates regularly point to a growing world population as a potential source of strife. But one environmental author doesn't agree. Fred Pearce is an environmental and investigative journalist. His books include Confessions of an Eco-Sinner and PeopleQuake, in which he argues the fears of a population explosion are overblown. His recent post on our Climate Desk partner site, Grist, sparked a sharp rebuttal from Robert Walker, executive vice president of the Population Institute. We invited them both to talk about the issue of population growth and its impact on climate change:

This podcast was produced by Need to Know as part of the Climate Desk collaboration.

Read Julia Whitty's Mother Jones cover story on population, The Last Taboo.

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