300 Million

10月17日(东部时间)本周二上午,US Census Bureau的统计表明美国人口达到了300 million,也即3亿。不少美国内外的媒体都有报道。比较搞的是似乎Science上发了一篇与之相关的demography的paper,紧跟着的下一期Science上发了一些读者评论,纷纷斥责:Science怎么能发这种paper。
以下摘自US Census Bureau(http://www.census.gov/Press
The U.S. Census Bureau today reported that the nation’s population will reach the
historic milestone of 300 million on Oct. 17 at about 7:46 a.m. (EDT). This comes
almost 39 years after the 200 million mark was reached on Nov. 20, 1967.
      The estimate is based on the expectation that the United States will register one
birth every seven seconds and one death every 13 seconds between now and Oct. 17,
while net international migration is expected to add one person every 31 seconds. The
result is an increase in the total population of one person every 11 seconds.

About Hongwei Xu

I'm a social demographer, a single-child, a husband, and a father.

One Response to 300 Million

  1. sophia说道:



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