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Negative Population Growth is a membership organization in the United States, founded in 1972. NPG works on overpopulation issues and advocates a gradual reduction in U.S. and world population. NPG believes the optimal population for the United States is 150 to 200 million and that the optimal world population is two to three billion. In order to accomplish their goal of a smaller U.S. population, the organization promotes policies which would reduce the fertility rate in the U.S. to 1.5 births per woman, and they advocate for reducing the level of immigration into the United States to 100,000 to 200,000 per year from the existing level of over 1.5 million per year. Membership stands at more than 25,000.〔(【引用サイトリンク】 What is NPG? )〕 ==See also== * Overpopulation * Over-consumption * Agriculture and population limits * Sustainability * The Limits to Growth * List of population concern organizations * Population Connection * The Revenge of Gaia * Malthusian catastrophe * Criticisms of globalization * Voluntary Human Extinction Movement 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Negative Population Growth」の詳細全文を読む スポンサード リンク
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