The population implosion.

[piece-itpete]

This struck me as interesting, since Rob had just mentioned Malthus.

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......according to the United States Census Bureau, Iran now has a similar birth rate to New England — which is the least fertile region in the U.S.

The speed of the change is breathtaking. A woman in Oman today has 5.6 fewer babies than a woman in Oman 30 years ago. Morocco, Syria and Saudi Arabia have seen fertility-rate declines of nearly 60 percent, and in Iran it’s more than 70 percent. These are among the fastest declines in recorded history.

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If you look around the world, you see many other nations facing demographic headwinds. If the 20th century was the century of the population explosion, the 21st century, as Eberstadt notes, is looking like the century of the fertility implosion.

Already, nearly half the world’s population lives in countries with birthrates below the replacement level. According to the Census Bureau, the total increase in global manpower between 2010 and 2030 will be just half the increase we experienced in the two decades that just ended. At the same time, according to work by the International Institute of Applied Systems Analysis, the growth in educational attainment around the world is slowing.

This leads to what the writer Philip Longman has called the gray tsunami — a situation in which huge shares of the population are over 60 and small shares are under 30.

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Rapidly aging Japan has one of the worst demographic profiles, and most European profiles are famously grim. In China, long-term economic growth could face serious demographic restraints. The number of Chinese senior citizens is soaring by 3.7 percent year after year. By 2030, as Eberstadt notes, there will be many more older workers (ages 50-64) than younger workers (15-29). In 2010, there were almost twice as many younger ones. In a culture where there is low social trust outside the family, a generation of only children is giving birth to another generation of only children, which is bound to lead to deep social change.

Even the countries with healthier demographics are facing problems. India, for example, will continue to produce plenty of young workers. By 2030, according to the Vienna Institute of Demography, India will have 100 million relatively educated young men, compared with fewer than 75 million in China.

But India faces a regional challenge. Population growth is high in the northern parts of the country, where people tend to be poorer and less educated. Meanwhile, fertility rates in the southern parts of the country, where people are richer and better educated, are already below replacement levels.

The U.S. has long had higher birthrates than Japan and most European nations. The U.S. population is increasing at every age level, thanks in part to immigration. America is aging, but not as fast as other countries.

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For decades, people took dynamism and economic growth for granted and saw population growth as a problem. Now we’ve gone to the other extreme, and it’s clear that young people are the scarce resource. In the 21st century, the U.S. could be the slowly aging leader of a rapidly aging world.

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http://www.nytimes.com/2012/03/13/op...implosion.html

Pete