Posts Tagged ‘birth rate’
“Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist”*…
… something that nature seems to know. The population of the world, now roughly 8.1 billion, seems poised to shrink. To some, this is good news; to others, a cause for alarm. Phoebe Arslanagić-Wakefield and Anvar Sarygulov, co-founders of Boom, fall into that latter camp. But their provocative analysis of the dynamics of the Baby Boom is relevant to anyone concerned with the future of population on earth…
… In the countries that it touched, the Baby Boom created generations massive in size. In the US alone, 76 million babies were born in its peak 18 years, 30 million more than were born in the previous 18, a demographic difference bigger than the 1960 population of Egypt, the Philippines, or Ethiopia. By 1965, people born during the Baby Boom made up 40 percent of America’s population.
Today, a fifth of both the UK’s and the USA’s population are baby boomers and we live in the world they created. Despite that, as mentioned above, the most widely known piece of information about the Boom is its most pervasive myth, that it was caused by the end of World War Two.
The Baby Boom was not the result of people making up for lost time during the war: it saw total lifetime fertility rates rise, meaning that people did not simply shift when they had their children but had more of them overall. And in many countries, including the US, UK, Sweden and France, the rise in birth rates began years before the war had even started, while neutral Ireland and Switzerland experienced Booms that began during the war, in 1940.
Instead, to explain the Baby Boom, we must consider why it was that the iron law of fertility – that as incomes go up, births must come down – was suspended for this extraordinary period of time…
Fascinating and important: “Understanding the Baby Boom,” from @PMArslanagic and @ASarygulov.
By way of further background on our current situation: “Population bomb, bust – or boon? New UNFPA report debunks 8 myths about a world of 8 billion.“
[image above: source]
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As we grapple with growth, we might send hygienic birthday greetings to Melville Bissell; he was born on this date in 1843. An inventor and entrepreneur, he created and marketed the first modern carpet sweeper… which, as explained in the article featured above, was a seminal contribution to the advances in household technology that helped fuel the Baby Boom.
“Demography is destiny”*…
Every time a man ejaculates, he produces somewhere between 40 million and 1.2 billion sperm. About half of those tiny swimmers carry an X chromosome and about half carry a Y. So you’d think that the odds that one or the other would be the first to fertilize an egg would be about the same as a coin flip. And yet, for as long as people have been keeping records, nature shows a different, dependable pattern: For every 100 babies born biologically female, 105 come out biologically male. Scientists have speculated this mysteriously male-biased sex ratio is evolution’s way of evening things out, since females consistently outlive their XY-counterparts—for every man that reaches the age of 100, four women have also joined the Century Club.
This biological maxim has been so drilled into the heads of demographers—the researchers responsible for keeping tabs on how many people there are on the planet—that most don’t think twice before plugging it into any projections they’re making about how populations will change in the future. But a massive effort to catalog the sex ratios at birth, for the first time, for every country, shows that’s not such a smart strategy after all.
“For so long people just took that number for granted,” says Fengqing Chao, a public health researcher at the Institute of Policy Studies in Singapore. “But no one had ever gone to the trouble of pulling all this information together to get accurate estimates of this fundamental metric.” Chao led the five-year project, combing through decades of census data, national survey responses, and birth records to build models that could estimate national sex ratios across time. In doing so, she and her collaborators at the United Nations discovered that in most regions of the world, sex ratios diverge significantly from the historical norm. Across a dozen countries, the chasm amounts to 23.1 million missing female births since 1970. The results, published in the Proceedings of the National Academy of Sciences, provide an unprecedented look at how societal values can skew the laws of nature…
The Case of the Gone Girls (and what it might mean): “First big survey of births shows millions of missing women.”
* Ben Wattenberg and Richard M. Scammon, paraphrasing Heraclitus in The Real Majority: An Extraordinary Examination of the American Electorate (Often mis-attributed to Auguste Comte– who died before the word “demography” was first cited in print.)
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As we become boosters for balance, we might send nurturing birthday greetings to Benjamin McLane Spock; he was born on this date in 1903. The first pediatrician to study psychoanalysis to try to understand children’s needs and family dynamics, he collected his findings in a 1946 book, The Common Sense Book of Baby and Child Care, which was criticized in some academic circles as being too reliant on anecdotal evidence, and in some conservative circles for promoting (what Norman Vincent Peale and others called) “permissiveness” by parents. Despite that push-back, it became one of the best-selling volumes in history, having sold at the time of Spock’s death in 1998 over 50 million copies in 40 languages.
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