Friday, September 9, 2011

Is College Worth it? You Bet It Is!

Every now and then someone comes along to suggest that maybe a college education really isn't important any more. Beyond the genuine improvement in one's understanding of how the world works, a college education is, in fact, a good financial investment. These are the clear findings of a study just released by the US Census Bureau. The authors, Tiffany Julian and Robert Kominski, use data from the American Community Survey to show that "education levels had more effect on earnings over a 40-year span in the workforce than any other demographic factor, such as gender, race and Hispanic origin." Mikoto Rich at the New York Times picked up on the story and added these comments regarding the persistent gender bias in earnings:


Among full-time, year-round workers, white men with professional degrees make nearly 49 percent more in lifetime earnings than white women with a comparable education level. The gender gap is narrower for blacks with professional degrees: black men with professional degrees earn 24 percent more in lifetime earnings than their female counterparts.

Thursday, September 8, 2011

Would You Want to Hide in Niger?

Niger has been in the news lately because of reports that some of Col. Gadaffi's loyalists have driven south there across the desert to seek refuge from the rebels who are now in control of Libya. Most of us do not know a lot about Niger, and so I was reminded of a recent article about the country published in the journal "International Perspectives on Sexual and Reproductive Health," by demographers Malcolm Potts, Virginia Gidi, Martha Campbell, and Sarah Zureick. Their major point is that although Niger is currently a country of only about 16 million people, it is growing at a pace that will reach 55 million by the middle of this century! Yet, no one knows what exactly how Niger is going to cope with this growth, since it is almost unimaginably poor.
In 2008, Niger ranked 174 out of 178 countries on the Human Development Index, with more than 60% of its population living on less than US$1 per day,  and the country’s Gross National Income that year ($330; purchasing power parity, $680) was among the world’s lowest. Furthermore, recent economic growth (approximately 2% per year) has been lower than population growth (more than 3.9%). Niger’s high dependency ratio (i.e., the ratio of dependent people to the working-age population) of 108 per 100 undermines the potential to build up the savings needed to expand the country’s infrastructure.

Tuesday, September 6, 2011

Pensions are a Problem in a Global Recession

There has been a lot of discussion in the United States and Europe about the cost of state-funded pensions--which are almost always PAYGO (pay as you go--current workers are paying for current retirees). The age structures of richer countries are heavy on the elderly of retirement age and light on the younger people of working age. This is why schemes are promoted to have workers pay into their own private pension plans over their lifetimes. In the current global recession, however, investments in the stock market, which are the major ways to "grow" your own pension, are going down, not up. As a report by Reuters notes, this may wind up forcing a delay in the retirement age even if governments don't push such a legislative agenda.


Pension funds in developed economies are facing a new crisis as falling equities and tumbling bond yields widen their deficits, threatening the incomes and retirement dates of future retirees.
At the heart of their problems is a steady move by pension plans in the United States, euro zone, Japan and the UK to cut exposure to risk after the financial crisis.
But this "de-risking" may end up depressing their long-term returns from stock market investment and challenge the conventional wisdom that shares generate higher returns than bonds.

Monday, September 5, 2011

Contagion--Ripped From the Headlines

The new movie "Contagion" hits the movie theaters this coming Friday, but Keith Darce of the San Diego Union has seen it already and obviously likes it--partly because it aims to be "true," and partly because it has a local connection to biotech firms in the region.

The film likely benefited from a trip to the CDC’s headquarters in Atlanta taken late last year by one of its stars, Kate Winslet, and producers Michael Shamberg and Stacey Sher, who previously worked together on “Erin Brockovich” and “Pulp Fiction.”
Winslet, who plays a member of the CDC’s Epidemic Intelligence Service, met with Dr. Anne Schuchat, the assistant surgeon general and director the National Center for Immunization and Respiratory Diseases
Although the genre has an ignoble track record for reflecting reality, the makers of “Contagion” appear to have gone to great lengths to ensure that their film rings true with public health experts as much as it might with moviegoers when it opens Friday.
One scene highlights genetic sequencing, a powerful biological tool that promises to revolutionize the way disease outbreaks are fought.
A pair of San Diego County companies have led the way in creating a new generation of machines capable of mapping the DNA of viruses and bacteria in a matter of hours instead of days and weeks.

Sunday, September 4, 2011

Haiti Tries to Turn the Tide on the Urban Transition

In the wake of last year's devastating earthquake in Port-au-Prince, Haiti is experimenting with de-urbanization--trying to get people out of the city and back into the countryside. At the time of the earthquake the city was home to nearly a third of the country's 10 million people, but as the Associated Press story about this notes, you have to understand why Port-au-Prince was so crowded in order to appreciate why this might just work.


Part of the reason was that Francois "Papa Doc" Duvalier, the late dictator, shut down ports and tore up roads to undermine his opponents in the countryside. And in the 1980s, new factories lured farmers to the city from fields where they were struggling to survive.
When the magnitude-7.0 earthquake struck on Jan. 12, 2010, some 300,000 people died, according to government figures. Densely packed neighborhoods became death traps. Whole neighborhoods were flattened. Many in Haiti have speculated that the death toll would have been lower had there been jobs and basic services in the countryside to keep people there.

Saturday, September 3, 2011

The Plague is Still the Plague

The Black Death arrived in Europe in the 14th century and devastated the population. It finally left Europe in the 17th century, after which the population and economy rebounded. As the New York Times reminds us:
The agent of the Black Death is assumed to be Yersinia pestis, the microbe that causes bubonic plague today. But the epidemiology was strikingly different from that of modern outbreaks. Modern plague is carried by fleas and spreads no faster than the rats that carry them can travel. The Black Death seems to have spread directly from one person to another.Victims sometimes emitted a deathly stench, which is not true of plague victims today. And the Black Death felled at least 30 percent of those it inflicted, whereas a modern plague in India that struck Bombay in 1904, before the advent of antibiotics, killed only 3 percent of its victims.

Friday, September 2, 2011

Portugal's "Lost Generation"

Who would have guessed a few years ago that if you lived in Portugal your job opportunities might be better in the former colonies of Brazil, Angola, or Mozambique? Yet, a story in BBC News suggests that there is a new generation of young professionals in Portugal who are looking to these places for work, given the really tough economic times in which Portugal finds itself. This is sort of a brain drain in reverse (since it is usually the former colonies whose brains are drained).


One in 10 graduates now leaves the country, leading many to talking about Portugal's "lost generation".
"This is the biggest emigration wave since the 1960s," says Filipa Pinho of the government's newly established Emigration Observatory.
Portugal has traditionally exported some of its manpower - it has a diaspora around the world of three million. But in the past, it was blue-collar workers and villagers who left for a better life. Now it's the skilled and well-educated.It is a historic role reversal, because for decades Portugal lured immigrants from its former colonies in Latin America and Africa.

Thursday, September 1, 2011

The Diversity Paradox

The Diversity Paradox is the title of a recently published book by Jennifer Lee and Frank Bean of UC-Irvine. At this summer's annual meeting of the American Sociological Association it received the Otis Dudley Duncan award from the Population Section. The awarding committee praised the book in these terms:
"The Diversity Paradox" uses census, survey, and in-depth interview data to examine patterns of intermarriage and multiracial identification among Asians, Latinos, and African Americans.  Lee and Bean analyze where the color line, and the economic and social advantage it demarcates, is drawn today and on what side of it members of these groups fall.  They show that Asians and Latinos with mixed racial ancestry are not constrained by strict racial categories in several geographic areas of the United States.  Racial status often shifts according to situation, with individuals choosing to identify along ethnic lines or as white, and their decisions are rarely questioned by others.  Asians and Latinos also intermarry with whites at moderate to high rates, which is viewed as part of the process of becoming American. African Americans, in contrast, intermarry at significantly lower rates than Asians or Latinos.  Multiracial blacks often choose not to identify as such and are typically perceived by others as being black only, underscoring the stigma still attached to being African American and the entrenchment of the one-drop rule.  Jennifer Lee and Frank Bean conclude that many Asians and Latinos, on the other hand, are relatively successful at disengaging their national origins from the concept of race. Their book will change the way we view immigration, the second generation, race and racial politics.

Tuesday, August 30, 2011

A New Way of Understanding What Might Kill Us

It has been more than half a century since the discovery of penicillin revolutionized our ability to control communicable disease. Since that time a lot of progress has been made on all kinds of diseases, although the emphasis has been more on degenerative diseases--treatments for cardiovascular conditions, cancer, and other issues that are associated especially with an aging population. But, a story in today's New York Times puts the control of bacteria and viruses back in the spotlight. The story focuses on the work of Dr. James M. Musser, chairman of pathology and genomic medicine at the Methodist Hospital System in Houston.
It is the start of a new age in microbiology, Dr. Musser and others say. And the sort of molecular epidemiology he and his colleagues wanted to do is only a small part of it. New methods of quickly sequencing entire microbial genomes are revolutionizing the field.
The first bacterial genome was sequenced in 1995 — a triumph at the time, requiring 13 months of work. Today researchers can sequence the DNA that constitutes a micro-organism’s genome in a few days or even, with the latest equipment, a day. (Analyzing it takes a bit longer, though.) They can simultaneously get sequences of all the microbes on a tooth or in saliva or in a sample of sewage. And the cost has dropped to about $1,000 per genome, from more than $1 million.

Monday, August 29, 2011

Federal Judge Blocks Alabama Immigration Law--For the Moment

A Federal District Judge in Alabama has temporarily blocked the implementation of the new anti-immigrant legislation that was scheduled to take effect this week in Alabama. She blocked it only to give herself more time to study the law, so both sides apparently took comfort in that fact:


The ruling was cheered both by Republican leaders who were pleased the judge didn't gut the law and by opponents who compare it to old Jim Crow-era statutes against racial integration.
Blackburn didn't address whether the law is constitutional, and she could still let all or parts of the law take effect later. Instead, she said she needed more time to consider lawsuits filed by the Justice Department, private groups and individuals that claim the state is overstepping its bounds.
The judge said she will issue a longer ruling by Sept. 28, and her temporary order will remain in effect until the day after. She heard arguments from the Justice Department and others during a daylong hearing last week.

Sunday, August 28, 2011

Urbanization is a Major Source of Environmental Degradation

An important new study has just been published in the academic journal PLoS One summarizing our knowledge of what growing urban populations mean for the environment. The authors--Karen Seto, Michail Fragkias, Burag Guneralp, and Michael Reilly--drew the following major conclusions:
The conversion of Earth's land surface to urban uses is one of the most irreversible human impacts on the global biosphere. It drives the loss of farmland, affects local climate, fragments habitats, and threatens biodiversity. Here we present a meta-analysis of 326 studies that have used remotely sensed images to map urban land conversion. We report a worldwide observed increase in urban land area of 58,000 km2 from 1970 to 2000. India, China, and Africa have experienced the highest rates of urban land expansion, and the largest change in total urban extent has occurred in North America. Across all regions and for all three decades, urban land expansion rates are higher than or equal to urban population growth rates, suggesting that urban growth is becoming more expansive than compact. 

Saturday, August 27, 2011

Why Are We Still Even Talking About Vitamin A?

The BBC News today highlights a paper just published in the British Medical Journal that extols the virtue of Vitamin A supplements for children.

UK and Pakistani experts assessed 43 studies involving 200,000 children, and found deaths were cut by 24% if children were given the vitamin. And they say taking it would also cut rates of measles and diarrhoea. The body needs vitamin A for the visual and immune systems to work properly. It is found in foods including cheese, eggs, liver and oily fish.

The incredibly sad part of this is that we have to keep talking about it in order to get the world to remember how important Vitamin A is for children. A very nice history of the discovery of how important Vitamin A can be is told in the PBS special of "Rx for Survival--Back to the Basics." Dr. Alfred Sommer at The Johns Hopkins Bloomberg School of Public Health is interviewed in this program, which I highly recommend to you:

Friday, August 26, 2011

Researchers Have Linked Climate Change and Conflict

A new research paper in Nature is reported to be the first to find a statistically significant relationship between climate change and conflict. The researchers, Solomon M. Hsaing, Kyle C. Meng, and Mark A. Crane, from Princeton and Columbia Universities, "looked at data on conflicts between 1950 and 2004 that killed more than 25 people in a year. They compared El Niño years, which happen roughly every five years, with La Niña years. El Niño tends to bring hotter, drier conditions - and La Niña cooler ones - to tropical countries, but both have less of an influence on temperate countries. The analysis included 175 countries and 234 conflicts, over half of which caused more than 1000 deaths. It found that the risk of conflict in tropical countries rose from 3 per cent during La Niña years to 6 per cent during El Niño years. The effect was absent from countries only weakly affected by these climate cycles."


The link between climate change and conflict is probably not a direct one, and the researchers were not able to nail down cause-and-effect relationships, but they do have some possible explanations in mind:

Lead author Solomon Hsiang of Columbia's Earth Institute said El Nino was an invisible factor -- but not the only one -- in driving intra-border conflict.By causing crop losses, hurricane damage or helping to spread epidemics of water-borne disease, it amplified hunger, loss, unemployment and inequality, which in turn fuelled resentment and division.
Other factors that could affect risk and the outcome are the country's population growth and prosperity and whether its government is able to manage El Nino events properly.

Thursday, August 25, 2011

New Marriage and Divorce Data from the Census Bureau, of all Places

The US Census Bureau has just published its first detailed report on marriage and divorce in the United States. Why? Well, the Census Bureau explains it thus:

Historically, data on marriages and divorces in the United States were collected from marriage and divorce certificates filed and collected at the state-level through the National Center for Health Statistics (NCHS) vital statistics system. In 1996, the Centers for Disease Control and Prevention (CDC) and the NCHS discontinued the collection of detailed state-level vital records data from marriage and divorce certificates. Beginning in 2008, questions about marital events were added to the ACS to collect national and state-level marriage and divorce data. These new marital events items fill a void in the marriage and divorce data collected in the United States.
The Associated Press picked up on the main findings:

Wednesday, August 24, 2011

Will the Census Bureau Really Kill Off the Statistical Abstract?

There has been a great deal of moaning the past few days about the news from the US Census Bureau that it is thinking of shutting off the US Statistical Abstract, which is one of the most popular items on its already very popular website (www.census.gov). Reuters News Agency summed up the situation:


A cost-cutting plan by the Census Bureau to kill off its U.S. Statistical Abstract was under fire this week from pundits and policy experts who rely on the annual collection of census data.
Published since 1878 and now nearly 1,000 pages, the abstract summarizes key metrics -- some weighty and some just interesting -- on the social, political and economic shape of the United States and beyond.
The bureau said in its fiscal 2012 budget report to Congress that it could save $2.9 million a year by terminating the abstract. It said the move was a "difficult decision." Both the printed and online versions would be discontinued.
Paul Krugman, a columnist for The New York Times who is often at odds with Samuelson on policy issues, in a column on Monday also protested the bureau's judgment.

Tuesday, August 23, 2011

Some Elections Are Demographically More Important Than Others

Since the Constitution requires that Congressional Districts be redrawn after each decennial census, the election just before the census data come out winds up laying the groundwork for districts for the following decade. As it turned out, the Republican Party won a lot of seats in 2010 and has been in the position of driving the redistricting bus in the majority of states that still leave that process to the governor and legislature. As the Associated Press notes:
Republicans romped last November, gaining 63 House seats to secure the majority, winning 11 governorships, including Ohio and Pennsylvania, and seizing control of the most state legislative seats they've held since 1928. The GOP is capitalizing on its across-the-board control in 26 states — governorship plus legislature — in the census-based drawing of a new political map that will be a decisive factor in the 2012 elections and beyond.Nearly half of the states have finished redrawing House lines based on population changes, although lawsuits and Justice Department reviews loom. The immediate post-election claims that the GOP could add 15 to 30 seats in the U.S. House through redistricting have proven unfounded, in large part because Republicans captured so many seats last November. Instead, the GOP has used the redistricting process to shore up its most vulnerable lawmakers, people like Ellmers and Farenthold."Redistricting starts with Republicans at a peak," said Tim Storey, an elections analyst with the nonpartisan National Conference of State Legislatures. "They hold a solid majority of seats in the House. It's hard to gain much more."

Monday, August 22, 2011

A Malaria Treatment So Wacky It Just Might Work--Someday

The New York Times has a very interesting story today about a project that is being funded by the Gates Foundation to try to bring malaria under control. The idea is to treat patients (mice, to begin with) by placing them (or parts of them) in a very low wattage microwave. It will be some time before we know if this treatment will work to rid a body of malaria, but the article's main value is that in interviewing one of the method's co-inventors, Dr. Jose Stoute at Penn State, it provides a very nice summary of the complex biology of the malaria parasite, which helps us understand why this parasite has been a nemesis for thousands of years.
The idea, he said, is based on the fact that malaria parasites invade red blood cells and eat the hemoglobin inside them. Hemoglobin contains iron — and, as any bozo who’s ever tried to heat up a sandwich wrapped in tinfoil knows, it’s a bad idea to microwave metal.
Of course, the red cells containing parasites are floating along in arteries right next to healthy red cells, so whatever damage the microwave does to the parasites cannot be visited on the healthy cells, too.

Sunday, August 21, 2011

Women in Asia are Just Saying No to Marriage

The Economist's lengthy cover story this week is about the flight from marriage among women in Asia. Japan continues to be the prime example, but the story notes that the phenomenon is spreading to other Asian countries, including China and India. The basic story is a familiar one: women are increasingly better educated and in the labor force, but they are still expected to do the bulk of childcare, eldercare, and housework, while at the same time having little ability to divorce a man they no longer want to live with. This is pretty much a bad deal, and many women are rejecting it.
What is remarkable about the Asian experience is not that women are unmarried in their 30s—that happens in the West, too—but that they have never been married and have rarely cohabited. In Sweden, the proportion of women in their late 30s who are single is higher than in Asia, at 41%. But that is because marriage is disappearing as a norm. Swedish women are still setting up homes and having children, just outside wedlock. Not in Asia. Avoiding both illegitimacy and cohabitation, Asian women appear to be living a more celibate life than their Western sisters (admittedly, they could also be under-reporting rates of cohabitation and pre-marital sex). The conclusion is that East Asia’s growing cohorts of unmarried women reflect less the breakdown of marriage than the fact that they are avoiding it.

Friday, August 19, 2011

Slave Maids in Lebanon

You have probably never have contemplated what the work of the Minister of Population in Madagascar might involve. Right? It turns out that one of her tasks is dealing with the tragedy of human trafficking. More specifically, dealing with the issue of poor women from Madagascar who are essentially sold into servitude in the middle east, including Saudi Arabia, Jordan, and in a story today from BBC News--in Lebanon.

Forced to work as a "slave maid" for wealthy families in Lebanon for 15 years, Abeline Baholiarisoa - a 59-year-old woman from Madagascar - finally achieved her freedom in March.
Madagascar's government chartered a plane to evacuate her and 85 other women.
The youngest of her four children, whom she left behind when he was six years old, played a key role in her evacuation, tracking her down via a welfare agency that rescues "slave maids", she says.
Ms Baholiarisoa says she was trapped in "a living hell" after being duped into going to Lebanon.
Madagascar's Minister of Population Nadine Ramaroson, the only government minister tackling the issue, says "a very organised network" involving senior government officials and businessmen emerged in the 1990s to engage in human trafficking.Ms Ramaroson says the government is trying to break the criminal networks, but it is not easy.Government officials provide fraudulent work permits, travel and identity document for around $5,000 per trafficked woman, social workers say.

Obama Administration Backs Off on Deportations

The Obama Administration has systematically been deporting a record number of undocumented immigrants, as I have noted before. Today, however, came an announcement that the policy would change and that only those who posed a threat to national security or public safety would be targeted for deportation (remember that being an undocumented immigrant is a misdemeanor, not a felony). The New York Times focuses on the benefit to non-US-born children of undocumented immigrants.
The new policy is expected to help thousands of illegal immigrants who came to the United States as young children, graduated from high school and want to go on to college or serve in the armed forces.Under the new policy, the secretary of homeland security, Janet Napolitano, can provide relief, on a case-by-case basis, to young people who are in the country illegally but pose no threat to national security or to the public safety.
The Associated Press looks at the bigger picture:


Laura Lichter, president-elect of the American Immigration Lawyers Association, said the devil was in the details of reviewing 300,000 cases.
But whatever the result, she said, the policy does bring administrative changes to the immigration system at a time when congressional action seems unlikely.
Many Republicans have long opposed any immigration overhaul, including the DREAM Act, characterizing such proposals as amnesty.
While the new policy does not provide illegal immigrants with a path to permanent residency, it does allow those whose cases are indefinitely stayed to apply for a work permit. The government could also reopen deportation cases if an immigrant is arrested or other circumstances in their case change.

Thursday, August 18, 2011

Do You Think You Have Lung Cancer? Ask Your Dog

My wife and I have had German Shepherds for more than twenty years and we have always been impressed not just by how smart they are, but by the fact that they (like a lot of other animals) "see" things in the world that we can't. BBC News reports this week on an experiment at a hospital in Germany showing that dogs have a remarkable ability to diagnose lung cancer in a person by smelling their breath.


It is thought that tumours produce "volatile chemicals" which a dog can detect.
Researchers trained four dogs - two German shepherds, an Australian shepherd and a Labrador - to detect lung cancer.
Three groups of patients were tested: 110 healthy people, 60 with lung cancer and 50 with chronic obstructive pulmonary disease, a narrowing of the airways of the lungs.They all breathed into a fleece filled tube, which absorbed any smells. The dogs sniffed the tubes and sat down in front of those in which they detected lung cancer smells. They were successful 71% of the time. The researchers showed the dogs were not getting confused by chemicals associated with chronic obstructive pulmonary disease or smoking. Dr Thorsten Walles, the report's author from Schillerhoehe Hospital, said: "In the breath of patients with lung cancer, there are likely to be different chemicals to normal breath samples and the dogs' keen sense of smell can detect this difference at an early stage of the disease. "Our results confirm the presence of a stable marker for lung cancer. This is a big step forward."

Wednesday, August 17, 2011

New Evidence of Family and Household Evolution in America

A new report on American families has just been released by the National Marriage Project at the University of Virginia, and it got press in today's New York Times.

The number of Americans who have children and live together without marrying has increased twelvefold since 1970, according to a report released Tuesday. The report states that children now are more likely to have unmarried parents than divorced ones.
According to the National Survey of Family Growth, part of the Centers for Disease Control, 42 percent of children have lived with cohabiting parents by age 12, far more than the 24 percent whose parents have divorced.
The report notes, however, that there are clear differentials in the population on this score:

Tuesday, August 16, 2011

The Great Brazilian Fertility Crash

There was a time when fertility levels in Brazil were among the highest in South America--a TFR of more than six as recently as the 1960s and still nearly four in the 1980s. And, of course, that is one of the reasons why Brazil has nearly 200 million people--almost twice the population of Mexico. Indeed, one in two South Americans lives in Brazil. Now, the story with respect to fertility is very different. Fertility has dropped below the replacement level. Why? An article by Cynthia Gorney in this month's National Geographic picks up the story:

Population scholars like José Alberto Carvalho maintain a lively argument about the multiple components of Brazil's fertility plunge. ("Don't let anybody tell you they know for sure what caused the decline," a demographer advised me at Cedeplar, the university-based study center in Belo Horizonte. "We'll never have a winner as the best explanation.") But if one were to try composing a formula for crashing a developing nation's fertility rate without official intervention from the government—no China-style one-child policy, no India-style effort to force sterilization upon the populace—here's a six-point plan, tweaked for the peculiarities of modern Brazil:

1. Industrialize dramatically, urgently, and late, causing your nation to hurtle through in 25 years what economists used to think of as a century's worth of internal rural-to-urban relocation of its citizens. 

2. Keep your medications mostly unregulated and your pharmacy system over-the-counter, so that when birth control pills hit the world in the early 1960s, women of all classes can get their hands on them, even without a doctor's prescription, if they can just come up with the money. Nurture in these women a particularly dismissive attitude toward the Catholic Church's position on artificial contraception. (See number 4.)

3. Improve your infant and child mortality statistics until families no longer feel compelled to have extra, just-in-case babies on the supposition that a few will die young. 

Monday, August 15, 2011

Jobs in Texas--What's Growth Got to Do With It?

Rick Perry, the governor of Texas, announced this weekend that he is running for President, and the pundits expect that his campaign will emphasize the theme that Texas has the answers for America in terms of how to grow jobs. However, in today's New York Times, Paul Krugman offers a correction to that view, and it has a decidedly demographic bent.


So where does the notion of a Texas miracle come from? Mainly from widespread misunderstanding of the economic effects of population growth.
For this much is true about Texas: It has, for many decades, had much faster population growth than the rest of America — about twice as fast since 1990. Several factors underlie this rapid population growth: a high birth rate, immigration from Mexico, and inward migration of Americans from other states, who are attracted to Texas by its warm weather and low cost of living, low housing costs in particular.
But what does population growth have to do with job growth? Well, the high rate of population growth translates into above-average job growth through a couple of channels. Many of the people moving to Texas — retirees in search of warm winters, middle-class Mexicans in search of a safer life — bring purchasing power that leads to greater local employment. At the same time, the rapid growth in the Texas work force keeps wages low — almost 10 percent of Texan workers earn the minimum wage or less, well above the national average — and these low wages give corporations an incentive to move production to the Lone Star State.
So Texas tends, in good years and bad, to have higher job growth than the rest of America. But it needs lots of new jobs just to keep up with its rising population — and as those unemployment comparisons show, recent employment growth has fallen well short of what’s needed.

Sunday, August 14, 2011

Pushback on the Alabama Anti-Immigrant Law

In June, the governor of Alabama signed into law one of the country's toughest pieces of legislation targeting undocumented immigrants in the U.S. Now, according to the NY Times, people are starting to push back against it, as best they can.

On a sofa in the hallway of his office here, Mitchell Williams, the pastor of First United Methodist Church, announced that he was going to break the law. He is not the only church leader making such a declaration these days.Thousands of protesters have marched. Anxious farmers and contractors have personally confronted their lawmakers. The American Civil Liberties Union and other civil rights groups have sued, and have been backed by a list of groups including teachers’ unions and 16 foreign countries. Several county sheriffs, who will have to enforce parts of the new law, have filed affidavits supporting the legal challenges.
An Episcopal bishop, a Methodist bishop and a Roman Catholic archbishop, all based in Alabama, sued on the basis that the new statute violated their right to free exercise of religion, arguing that it would “make it a crime to follow God’s command to be Good Samaritans.”
“The law,” said Archbishop Thomas J. Rodi of Mobile, “attacks our core understanding of what it means to be a church.”

In one of the more bizarre parts of the law, it is now a crime in Alabama to give a ride to someone who is known to be an undocumented immigrant.

Friday, August 12, 2011

A Convergence of Civilizations

I recently read (and very much enjoyed) "A Convergence of Civilizations" by Youssef Courbage and Emmanuel Todd, who are researchers at INED, the French National Institute for Demographic Studies. This book was published originally in French but was translated and published this year in English by Columbia University Press. The book is what I would call an "interpretive essay," in the sense that the authors are attempting to interpret a broad temporal and geographic range of data trying to understand why rates of population growth are so high in some Muslim countries, in particular, although not so high in others. The basic premise is that the supposed schism in the world between Islam and the "West" is not a real phenomenon. Rather, all less developed nations, including those that are predominantly Muslim, are heading toward modernity through lower fertility and the key is the timing of literacy--especially for women, but also for men. It is literacy that matters in the world, not religion. As the authors note in their introduction:
The explanatory variable [for a decline in fertility] that has been most clearly identified by demographers is not the per capita GDP, but the literacy level of women...The elimination of illiteracy, then, points back to a  classic conception of universal history, that of the Enlightenment or the nineteenth century, as Condorcet conceived of it in his "Outlines of an Historical View of the Progress of the Human Mind," or Hegel in his "Lectures on the Philosophy of History." It has no doubt gone a little out of fashion, but it remains relevant.

Thursday, August 11, 2011

Central Americans Account for the Majority of Latinos in Maryland

The Washington Examiner has a story today about the high percentage of Latinos in Maryland that are from Central America, especially El Salvador, despite the fact that the average American probably thinks that anyone speaking Spanish is from Mexico (which the US government now typically defines as being in North America, rather than Central America).

Central Americans now make up the majority of Maryland's Hispanic population -- the fastest-growing population in the state -- a growth primarily led by a large influx of Salvadorans over the last decade, new Census data shows.
In the last decade, the number of Salvadorans statewide more than tripled and their share of Maryland's Hispanic population increased by 11 percentage points, the largest jump of any group."It's important to keep in mind that a lot of growth is coming from children, so that has its own set of issues associated with it," said Audrey Singer, a senior fellow with the Brookings Institution. "[Especially] with certain countries like El Salvador and Guatemala where the economy and political conditions were so harsh that people who would not normally leave did leave."

Wednesday, August 10, 2011

Will Robots Replace Human Workers in China?

If you look at the back of your iPhone or iPad you will see that it was "Designed by Apple in California Assembled in China." The Chinese assembly is handled by a Taiwan-based company called Foxconn. According to The Economist, its one million workers may make it China's largest employer. But humans are increasingly expensive, so Foxconn is now looking into replacing some of them with robots.

China’s competitive edge has long been its vast supply of cheap hands. But as the country grows richer, skills shortages are driving wages rapidly up. Foxconn’s decision to alter its mix of capital and labour is thus logical, and mirrors what many smaller firms are already doing.
Rising wages are good for Chinese workers, and for firms that want to sell them things. But they also raise questions. Do they spell an end to the cheap “China price” for manufactured goods? Will multinational firms shift production elsewhere? Or will Chinese firms adapt nimbly to automation and remain fearsome competitors? They might, but Chinese robots may be no cheaper than robots elsewhere.
Finally, will the shift to a more capital-intensive capitalism throw legions of workers onto the streets? The Chinese authorities will be watching nervously.

Monday, August 8, 2011

"Betting the Planet" revisited

Way back in 1980 Paul Ehrlich, author of the "Population Bomb" and Julian Simon, author of "The Ultimate Resource" (by which he meant people) entered into a bet that some called "Betting the Planet." Ehrlich believed that, as Malthus predicted, population growth would overrun resources, the evidence of which would be a rise in resources prices. Simon disagreed and argued that human ingenuity would solve the world's problems and so prices would not rise because humans would find substitutes for each resource and just move on. This week's Economist picks up the story:

Faced with a challenge from Mr Simon, Mr Ehrlich selected five metals—copper, chromium, nickel, tin and tungsten—whose prices he thought would rise in real terms over the following ten years. Mr Simon bet that prices would fall. It is clear in retrospect that Mr Ehrlich showed bad timing, since the late 1970s saw a cyclical zenith for commodity prices. But Mr Simon also had history on his side: real commodity prices fell steadily throughout the 20th century.

Mr Simon duly won the bet. The economic boom of the 1980s and 1990s also contradicted Mr Ehrlich’s wilder claims—that a billion people would starve to death and that, by 1985, America would be trapped in an “age of scarcity”.

Sunday, August 7, 2011

Gentrification and Diversity in American Cities

Gentrification has been underway in richer cities of the world for decades, but the 2010 Census in the US has revealed that it is an important part of increasing the residential diversity of cities. The latest story comes from New York, where the NY Times reports on the transformation of the Bedford-Stuyvesant neighborhood in NYC's Borough of Brooklyn "that traces its African-American roots to the early 19th century and has been the borough’s black cultural capital for decades."

Overshadowed by Harlem’s racial metamorphosis since 2000, an even more striking evolution has occurred in Bedford-Stuyvesant. Over all, the neighborhood is now barely 60 percent black — down from 75 percent a decade ago. But in the older Bedford section west of Throop Avenue, according to the 2010 census, blacks have recently become a minority of the population for the first time in 50 years.
“Both the fall of the crime rate and the improvement of the subway were conditions that made this neighborhood more attractive to people who might not have considered living there in the past,” said John H. Mollenkopf, director of the Center for Urban Research at the Graduate Center of the City University of New York.
“In the 2010 census, the first thing we noticed was how the concentrations in many traditional black and white areas dropped off across so many blocks,” said Steven Romalewski, director of the mapping service of the Center for Urban Research at CUNY’s Graduate Center, which analyzed the census results block by block.

Friday, August 5, 2011

Hispanics Continue to be Victimized by US Immigration Policies

Professor Douglas Massey of Princeton has an excellent Op-Ed piece in today's New York Times that connects the dots between the current US immigration policy, the sub-prime mortgage practices that led to the housing bubble, and the rather astounding drop in household wealth among Hispanics as a result of the Great Recession. The latter finding is drawn from a new Pew Hispanic Center report that analyzes a just-released set of data from the U.S. Census Bureau's Survey of Income and Program Participation (SIPP). Among the highlights of Massey's comments are the following points:

Hispanic families saw the largest decline in wealth of any racial or ethnic group in the country during the latter half of the last decade: from 2005 to 2009, their median wealth fell by an astounding 66 percent. The reason? The implosion of the housing market, where Hispanic families had invested much of their wealth.But that’s only the latest chapter in a much longer story. Over the past two decades Hispanics have moved from the middle of the socioeconomic hierarchy, between blacks and whites, to a position below both. On virtually every indicator of socioeconomic welfare, Hispanics fell relative to blacks.This has nothing to do with nativist tropes like work ethic or resistance to assimilation and everything to do with misguided government policy: our immigration and border-control system has created a class of people cut off from traditional legal and economic structures and thus vulnerable to the worst depredations of the market system.Because of the irresistible draw of the American economy, militarization of the border didn’t really affect undocumented in-migration, but it did reduce out-migration — migrants knew that once they left it would be hard to get back in. Whereas there were an estimated 3 million undocumented migrants in 1990, the number rose thereafter to peak around 12 million in 2007 and 2008, at which point half of all Salvadoran immigrants, 60 percent of all Mexican immigrants and two-thirds of Guatemalan and Honduran immigrants were here illegally.

Thursday, August 4, 2011

East Africa Famine Worsens into "A Vision of Hell"

The famine in the Horn of Africa, especially Somalia, is getting worse, not better, according to all reports. The problem started with the worst drought in 60 years but is compounded by the fact that it is centered in a region of Somalia that is controlled by a militant group--Shebab--that is determined not to allow food aid to reach the victims. The victims are disproportionately children.


Across the sprawling mass of the Dadaab refugee camp - some 50 km sq (19 sq miles) - there are several graveyards now, full of small mounds of earth, where chronically malnourished Somali refugees have been buried.
Usually the graves are horribly small: infant mortality in this camp has risen threefold in the last few months, according to the United Nations.

Wednesday, August 3, 2011

HIV/AIDS in the News in the Middle East and West Africa

The incidence of HIV/AIDS is low by world standards in the Middle East and in many Western African countries, as well. But that does not mean that problems don't exist. Reuters reports on a new study by a group in Qatar published in PLoS Medicine suggesting that there is a generally unrecognized epidemic in a few middle eastern countries. This appears to be largely a result of men having sex with men (MSM):


Epidemics of HIV are emerging among gay and bisexual men in the Middle East and North Africa and high levels of risky sexual behavior threaten to spread the AIDS virus further in the region, researchers said Tuesday.
In the first study of its kind in a region where homosexuality and bisexuality are taboo, researchers from Weill Cornell Medical College in Qatar found evidence for concentrated HIV epidemics -- where infection rates are above 5 percent in a certain population group -- in several countries such as Egypt, Sudan, Pakistan and Tunisia.

Tuesday, August 2, 2011

Italy Moves Toward a Ban on Face Veils

The Italian Parliament is considering a bill that, if passed, would prohibit women from wearing a veil in public that covers the face. This legislation is similar to laws already in place in Belgium and France.

The bill, which has the backing of Prime Minister Silvio Berlusconi's central-right coalition, would prohibit the wearing of a burka, niqab or any headwear which covers the face.If passed, those who defied the ban would face a fine of 150-300 euros ($213-426; £130-260) and some kind of community service, according to Ansa news agency.

Monday, August 1, 2011

The Demographics of Job Creation

One of the topics that keeps popping to the surface in the swirl of discussion around the debt ceiling and the deficit is: How do we create more jobs? More specifically, the observation is routinely made that Ronald Reagan was able as President to create jobs and reduce taxes at the same time. This of course ignores the fact that taxes actually rose several times during the Reagan administration before coming down, but setting that aside, Reagan was blessed by an unusually propitious age structure. He was the beneficiary of America's age dividend. The Baby Boomers blossomed during his presidency, providing a cohort of young workers (young = cheaper than older workers in most circumstances) without a large group of older people that the government had to pay for, and without a large group of younger dependents. During his administration from 1981-1989 the percent of the US population aged 15-29 was 27--higher than at any time since the end of WWII and it has not been that high since. The population aged 20-44 was 40 percent during his presidency--higher than at any time since the end of WWII and it has not been that high since.

Friday, July 29, 2011

The Way Forward Demographically

This week's Science magazine (a publication of the American Association for the Advancement of Science and one of the world's most prestigious magazines/journals) is a special issue (Volume 332, Number 6042, 29 July 2011) devoted to an examination of "the opportunities and challenges created by demographic changes around the world." This issue is done in conjunction with the world's "achievement" this year of having 7 billion of us alive at that same time.

Although you cannot read the articles online without a subscription to the magazine, I strongly encourage you to pick up a copy at your library. The Sciencemag.org website does include a nice seven-minute video providing an overview of the world's population issues, and the introduction to the special issue lays out the problem:

Today these demographic patterns spark concerns, not of a single explosion, but of “cluster bombs” in rapidly growing countries such as Nigeria and Pakistan, which are hobbled by poor governance and limited schooling capacity and already have huge numbers of poorly educated young adults without job prospects.

Thursday, July 28, 2011

Small Town America is Nearly a Thing of the Past

Reporters have continued to mine the recent Population Reference Bureau report summarizing findings from the 2010 Census, and have discovered that rural America is on the verge of disappearing.


The latest 2010 census numbers hint at an emerging America where, by midcentury, city boundaries become indistinct and rural areas grow ever less relevant. Many communities could shrink to virtual ghost towns as they shutter businesses and close down schools, demographers say.
More metro areas are booming into sprawling megalopolises. Barring fresh investment that could bring jobs, however, large swaths of the Great Plains and Appalachia, along with parts of Arkansas, Mississippi and North Texas, could face significant population declines.
A key element in all of this has been the decline of mining and timber industries that created jobs in rural areas in the past but no longer do so. Farming is a now a big business, so there are relatively few farm families any more. Furthermore, almost everyone has access to the same TV and internet as everyone else, so rural areas are not socially isolated in the way that they once were.

Wednesday, July 27, 2011

Asian Immigrants in Jordan

The discussion over the past few months related to the Middle East has obviously been of the events generally known as the Arab spring, and surrounding that discussion has been the issue of whether or not the violence and conflict have roots in a youth bulge. A report today from the Migration Policy Institute in Washington, DC indirectly suggests that the youth bulge may not have been such a big issue after all. Here's why: An increasing fraction of the labor force in Jordan is composed of Sri Lankans and Filipinos (actually Filipinas--see below), rather than Arabs, who have traditionally made up the immigrant labor force. 


Unskilled and semi-skilled migrant workers from the Arab region have been filling labor shortages in Jordan for decades, shaping its labor market and sustaining its economy. Although Arab nationals still account for a majority of migrant workers in Jordan today, the migration flow to Jordan has changed in recent years with the growing importance of non-Arab migrants from Asia.
Jordan’s census data suggest that the non-Arab Asian population’s share of the total foreign population more than doubled from 7 percent in 1994 to 15 percent in 2004. Among economically active migrants, non-Arab Asians comprised an even larger share, reaching nearly 30 percent by 2004.1A significant proportion of this new migration flow from Asia comes from Sri Lanka and the Philippines, which together account for nearly a third of the total.

Tuesday, July 26, 2011

A Small Crack in the Chinese One-Child Wall?

This week's Economist reports that the director of Population and Family Planning in China's Guangdong Province has applied to the central government for a "relaxation" of the one-child policy as applied to his province. The proposal is to allow a couple to have a second child if only one of them is a singleton, compared to the current policy which allows a second child only if both potential parents are singletons.


Zheng Zizhen, a demographer at the Guangdong Academy of Social Sciences (GASS), says even a modest change would help. “Every couple, in Guangdong and all over China, should be able to have two children. But before we take a second step or a third step in that direction, we need to at least take a first step like this one.”
Most demographers think the one-child policy has imposed huge costs on the country. The 2010 census showed that population growth was even slower than expected, rising just 0.57% a year over the past decade. The policy has caused conflicts with ordinary people and been a target of intense foreign criticism, worries Peng Peng of GASS (who nevertheless worries about relaxing it too fast). The costs were highlighted recently by revelations of a long-running scandal in Hunan province, where officials are accused of brutalising parents who violate the policy by confiscating “illegal” babies and putting them up for sale in the adoption market.

Monday, July 25, 2011

North Koreans Are Having Trouble Feeding Themselves

North Korea makes the news largely for its nuclear program and human rights abuses, but it now appears to be facing a serious food shortage, as well. This is almost certainly not as bad as that in Somalia, but it still seems to be bad.
North Korea's food shortage has reached a crisis point this year, aid workers say, largely because of shocks to the agricultural sector, including torrential rains and the coldest winter in 60 years. Six million North Koreans are living "on a knife edge" and will go hungry without immediate food aid, the World Food Program said, calling in April for $224 million in emergency aid.
The country has not had the resources to invest heavily in agriculture, so the ability to grow food is limited.
North Korea, population 24 million with an annual per capita income of $1,800, has the manpower but lacks the economic and natural resources to succeed at farming, said Kim Young-hoon from the Korea Rural Economic Institute in Seoul, South Korea. He said the North Koreans continue to pursue new ways to stimulate the agricultural sector but cannot fund their ambitious projects.

Sunday, July 24, 2011

Killings in Norway Appear to be Racist Response to Immigration

Norway was rocked yesterday by the killing of more than 90 people and the wounding of many others by a single person, identified as a Norwegian.
The man blamed for killing at least 93 people during terrorist attacks on Norway's government headquarters and an island retreat for young people wanted to trigger an anti-Muslim revolution in Norwegian society, his lawyer said Sunday.
The attacker picked targets linked to Norway's left-wing Labor Party. Breivik's manifesto pilloried the political correctness of liberals and warned that their work would end in the colonization of Europe by Muslims.
Such fears may derive, at least in part, from the fact that Norway has grown increasingly multicultural in recent years as the prosperous Nordic nation has opened its arms to thousands of conflict refugees from Pakistan, Iraq and Somalia. The annual Labor Party retreat — which the prime minister, Stoltenberg, fondly remembers attending in his own youth — reflected the country's changing demographics as the children of immigrants have grown increasingly involved in Labor politics.

Saturday, July 23, 2011

Deportation of Undocumented Immigrants on the Rise in the US

The Obama administration has put a new de facto immigration policy into effect in the last couple of years. This involves a considerable jump in the number of immigrants, especially those without documentation, who are deported after committing a crime in the United States. This is not quite what it seems, however, seems a large fraction of arrests are for misdemeanors, especially traffic violations.

The U.S. deported nearly 393,000 people in the fiscal year that ended Sept. 30, half of whom were considered criminals. Of those, 27,635 had been arrested for drunken driving, more than double the 10,851 deported after drunken driving arrests in 2008, the last full year of the Bush administration, according to Immigration and Customs Enforcement data provided to The Associated Press.
An additional 13,028 were deported last year after being arrested on less serious traffic law violations, nearly three times the 4,527 traffic offenders deported two years earlier, according to the data.
The spike in the numbers of people deported for traffic offenses as well as a 78 percent increase in people deported for immigration-related offenses renewed skepticism about the administration's claims that it is focusing on the most dangerous criminals.

Friday, July 22, 2011

UN Declares Famine in Somalia

The drought situation in the Horn of Africa, which I mentioned three weeks ago, has been upgraded (if that is the right word in this horrendous situation) to a famine, especially in Somalia.
The UN officially declared famine in two southern Somalia regions Wednesday as the world slowly mobilised to save 12 million people battling hunger in the region's worst drought in 60 years.

UN humanitarian coordinator for Somalia Mark Bowden declared that southern Bakool and Lower Shabelle regions had been hit by famine.
In total, the UN said an estimated 3.7 million people -- or nearly half of the war-torn country's population -- were facing a food crisis.
"If we don't act now, famine will spread to all eight regions of southern Somalia within two months, due to poor harvests and infectious disease outbreaks," Bowden told reporters in neighbouring Kenya.
The Economist this week notes that the situation may well be as bad in Eritrea, but it is even more difficult to get information from there than from Somalia.

Wednesday, July 20, 2011

Media Demographics Follow the Boomers

The Economist this week has a good analysis of the changing demographics of the media, and what that means for people trying make a profit by aiming at different demographic groups. For a long time, the prime target audience was the 18-49 "demographic," but that is so yesterday.
The noisy disruption of media business models by the internet in the past decade has obscured a profound demographic transformation. Whether they are buying music, listening to the radio, reading newspapers or watching television, media consumers are ageing even more quickly than the overall population. Rather than trying to reverse this trend by attracting younger people, many companies are attempting to profit from the greying of media.

Tuesday, July 19, 2011

Safer Deliveries in Sierra Leone

Data from the World Health Organization show that Sierra Leone has the highest rate of maternal mortality of any country in the world, with 2,100 maternal deaths per 100,000 live births (compared, for example, with 11 in the US and 7 in Canada). The New York Times reports on a new internationally-funded program in Sierra Leone to waive fees for pregnancy and delivery in order to improve birth outcomes.

Sierra Leone is at the vanguard of a revolution — heavily subsidized for now by international donors — that appears to be substantially lessening health dangers here in one of the riskiest countries in the world for pregnant women and small children.
Country after country in sub-Saharan Africa has waived medical fees in recent years, particularly for women and children, and while experts acknowledge that many more people are getting care, they caution that it is still too early to declare that the efforts have measurably improved health on the continent.
In Sierra Leone, though, it seems clear that lives are being saved, providing an early and concrete lesson about the impact of making health care free for the very poor and vulnerable.
By waiving the requirement for payments — which sometimes amount to hundreds of dollars and clearly represent the main barrier to using health facilities — the government here appears to have sharply cut into mortality rates for pregnant women and deaths from malaria for small children.

Sunday, July 17, 2011

Educating Our Way Out of the Great Recession

There is no question in my mind that the single most important thing a person can acquire in life is a good education. But as college professor, I can easily be accused of bias on this issue, so it was good to read Nicolas Kristof's Op-Ed piece in today's New York Times, in which he laments that the Great Recession is taking its toll on our nation's greatest asset--our educational system.

The United States supports schools in Afghanistan because we know that education is one of the cheapest and most effective ways to build a country.
Alas, we’ve forgotten that lesson at home. All across America, school budgets are being cut, teachers laid off and education programs dismantled...The Center on Education Policy reports that 70 percent of school districts nationwide endured budget cuts in the school year that just ended, and 84 percent anticipate cuts this year.
And he hits a target close to my home:

Saturday, July 16, 2011

The Dangers of Demographic Deception

I have already commented on the tendency of cities to think that they have been under-counted by the census--although there is never a complaint about over-counting. Mark VanLandingham, a demographer at Tulane University, has a very good Op-Ed piece in today's New York Times pointing out the dangers of over-estimating the population. 

Such overestimates have been especially problematic for New Orleans. According to the original census estimates for 2007, the city’s population stood at 239,124, which independent sources, like voter turnout and death records, indicate was a reasonable guess. But after heavy lobbying from then-Mayor Ray Nagin’s office — claiming the bureau’s methods missed large numbers of poor residents — the number was revised upward by about 20 percent, to 288,113.
A similarly successful challenge to the 2008 initial estimate led to yet another substantial uptick; combined, these revised estimates put the city on pace to recover almost all the residents it had lost after Hurricane Katrina within a few years.

Friday, July 15, 2011

Children of Immigrants as a Demographic Force in America

The Pew Hispanic Center has just released a new report showing that births among immigrants from Mexico (the largest source of migrants to the US) are now more important a factor in demographic growth than is immigration itself. This is, of course, an old story. Until the implementation of the racist national origins quota laws in the late 1920s, the children of immigrants had historically been more important to growth in the US than had the immigrants themselves. So, we are really just returning to a familiar theme from the past. 
Miriam Jordan of the Wall Street Journal has reported on the story:
The population of Latinos of Mexican origin, who represent nearly two-thirds of U.S. Hispanics, grew by 7.2 million between 2000 and 2010 as a result of births, but the Washington-based research center attributed only about 4.2 million to immigrant arrivals. In the previous two decades, the number of new Mexican immigrants in the U.S. either matched or exceeded the number of births.
The current surge in births follows the massive wave of Hispanic immigration to the U.S. that began in the 1970s. The tilt suggests that descendents of immigrants could be the main engine of U.S. population growth for decades to come.
Mr. Potter, the Texas state demographer, says the higher fertility among Hispanics is unlikely to last forever. "As the Hispanic population becomes more mainstream, fertility rates will decline," he said.

Thursday, July 14, 2011

Smoking Slowly Being Snuffed Out in US

Janet Lavelle of the San Diego Union-Tribune followed up today on a report just issued by the California Department of Public Health showing that the smoking rate has fallen to a record low in California. This is a very encouraging sign since smoking is one of the major "real" causes of death throughout the world.
The rate of adult smokers statewide dropped to a record low of 11.9 percent in 2010, making California and Utah the only states to reach a federal target to cut smoking rates to 12 percent by 2020.
Officials attributed at least some of the drop to California’s aggressive public anti-smoking campaign launched in the late 1980s. While the latest statistics are encouraging, health officials said smoking remains the leading preventable cause of disease and death, killing more than 400,000 Americans annually.
It is important to note that this overall drop is not just a result of the overall aging of the population. It is very importantly dropping in the teen years--the ages at which people are  most likely to get addicted to cigarettes.

Wednesday, July 13, 2011

Children Are at an All-Time Low as a Percent of US Population

The Population Reference Bureau this week released a report on some of the major findings from the 2010 Census, and among the things picked up by the press was that children now represent an historic low as a percent of the US population.

Currently, the share of children in the U.S. is 24 percent, falling below the previous low of 26 percent of 1990. The share is projected to slip further, to 23 percent by 2050, even as the percentage of people 65 and older is expected to jump from 13 percent to 19 percent due to the aging of baby boomers and beyond.
In 1900, the share of children reached as high as 40 percent, compared to a much smaller 4 percent share for seniors 65 and older. The percentage of children in subsequent decades held above 30 percent until 1980, when it fell to 28 percent amid declining birth rates, mostly among whites.
Social theory would suggest that as the number of children declines, then there should be greater investment in each child--trading quality for quantity. That may work in the classic family setting of two parents and their children, with no older people to care for, but the analogy may not cross over into the community setting.