美国一些人口问题专家作过这样的计算:占全球人口总数5％的美国,消耗着全世界25％的商业能源,其人均消费量相当于147个孟加拉国人或422个埃塞俄比亚人,为第三世界人均水平的30～40倍。若按消耗的能源计算,美国每年增加的300万人口就等于第三世界每年增加9O00万至1.2亿人口,与目前全世界每年净增加的人口总数大体相当。美国一个名为“人口零增长”的组织认为,按自然资源的消费量计算,美国才是 Some U.S. population experts say that the United States, which accounts for 5% of the global population, consumes 25% of the world’s commercial energy and has a per capita consumption equivalent to 147 Bangladeshi or 422 Ethiopian people, representing the third world Per capita level of 30 to 40 times. If calculated on the basis of energy consumption, the annual increase of 3 million in the U.S. equivalent to an increase of 90 million to 120 million people in the Third World each year is roughly equivalent to the current annual net increase in the world. In the United States, an organization called Zero Population Growth believes that the U.S. is based on the consumption of natural resources