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Should the United States curtail immigration?Population GrowthJul. 16, 1993
Has economic development proved Malthus wrong?Population and the EnvironmentJul. 17, 1998
Will low fertility rates in Europe cause economic problems?Declining BirthratesNov. 21, 2008
Is large-scale immigration good for the U.S. economy?Changing DemographicsNov. 16, 2012
Should the Mexico City Policy be reinstated?Global Population GrowthJan. 16, 2015
Is population growth a major concern?Global Population PressuresJun. 22, 2018