Showing posts from category population.
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Robert Engelman, Yale Environment 360
The World at 7 Billion: Can We Stop Growing Now?
›August 11, 2011 // By Wilson Center StaffThe original version of this article, by Robert Engelman, appeared on Yale Environment 360.
Demographers aren’t known for their sense of humor, but the ones who work for the United Nations recently announced that the world’s human population will hit seven billion on Halloween this year. Since censuses and other surveys can scarcely justify such a precise calculation, it’s tempting to imagine that the UN Population Division, the data shop that pinpointed the Day of 7 Billion, is hinting that we should all be afraid, be very afraid.
We have reason to be. The 21st century is not yet a dozen years old, and there are already one billion more people than in October 1999 – with the outlook for future energy and food supplies looking bleaker than it has for decades. It took humanity until the early 19th century to gain its first billion people; then another 1.5 billion followed over the next century and a half. In just the last 60 years the world’s population has gained yet another 4.5 billion. Never before have so many animals of one species anything like our size inhabited the planet.
And this species interacts with its surroundings far more intensely than any other ever has. Planet Earth has become Planet Humanity, as we co-opt its carbon, water, and nitrogen cycles so completely that no other force can compare. For the first time in life’s 3-billion-plus-year history, one form of life – ours – condemns to extinction significant proportions of the plants and animals that are our only known companions in the universe.
Did someone just remark that these impacts don’t stem from our population, but from our consumption? Probably, as this assertion emerges often from journals, books, and the blogosphere. It’s as though a geometry text were to propound the axiom that it is not length that determines the area of a rectangle, but width. Would we worry about our individual consumption of energy and natural resources if humanity still had the stable population of roughly 300 million people – less than today’s U.S. number – that the species maintained throughout the first millennium of the current era?
Continue reading on Yale Environment 360.
Robert Engelman is executive director of the Worldwatch Institute, an environmental research organization based in Washington, D.C.
Photo Credit: “Daybreak,” courtesy of flickr user Undertow851. Dawn breaks over California in the United States April 17, 2011 in this photo by NASA astronaut Ron Garan from the International Space Station. The lights of Los Angeles appear in the foreground while San Francisco appears in the back near the horizon. -
PRB’s Population Data Sheet 2011: The Demographic Divide
›August 9, 2011 // By Kellie Furr“Today, most population growth is concentrated in the world’s poorest countries – and within the poorest regions of those countries,” write the authors of the 2011 Population Data Sheet, an analysis tool published annually by the Population Reference Bureau (PRB). The population projections between poor and rich countries are “stark and very sad,” said Carl Haub Haub, senior demographer at PRB, at the July 28 web-based launch of the Data Sheet: “We call it the demographic divide. It shows the vast difference that has developed between the rich and poor countries of the world.”
The Population Data Sheet offers insight on global population trends using detailed statistical information along 18 demographic, population, health, and environment indicators for more than 200 countries and regions. The data sheet is based on the latest projections of the UN Population Division. Carl Haub and James Gribble of PRB discussed the long-term implications of the data sheet’s projections during web-based launch that included open questions.
Conflicting Trends
“Even though the world population growth rate has slowed from 2.1 percent per year in the late 1960s to 1.2 percent today, the size of the world’s population has continued to increase – from 5 billion in 1987, to 6 billion in 1999, and to 7 billion in 2011,” write the authors in PRB’s July Population Bulletin, “The World at 7 Billion.” To put those population totals into perspective, it took from the inception of human existence until the year 1800 – a total of approximately 50,000 years – to reach the first billion.
Fortunately, the recent (relative) decline in global growth rate has already curbed what could have been a considerable surge in the world’s population: “If the late 1960s population growth rate of 2.1 percent – the highest in history – had held steady, world population would have grown by 117 million annually, and today’s population would have been 8.6 billion,” said PRB President Wendy Baldwin in a press release. However, the world’s population still grows significantly at 77 million people annually, according to the UN, and we’re slated to reach 8 billion in just another 12 years. How can this dichotomy of large population totals in the face of lowered fertility be explained?
The Phases of Demographic Transition
“To understand global, we actually have to think local,” said PRB in their film short, “7 Billion and Counting,” released alongside the data sheet. Individual countries go through demographic transitions at different times, and the disparity in where countries are along in their progression varies greatly.
A demographic transition essentially hinges on two trends: the decline of birth and death rates over time. These trends do not necessarily change simultaneously however, resulting in most cases, first, a natural increase (when mortality rates decline but birth rates remain high) followed by a natural decrease in population (when birth rates also decline). Though the timing and magnitude of these trends differ from place to place, there are broad similarities across countries which have been conceptualized as phases by demographers, such as Carl Haub and James Gribble.Phase one is characterized by high birth rates and fluctuating death rates, found in countries such as Niger, Afghanistan, and Uganda; typically only death rates decline in this phase. Phase two, encompassing mostly lower-middle income countries such as Guatemala, Ghana, and Iraq, is marked by a continued decline in death rates but only slightly lower birth rates. The potential for large population growth exists in these countries, as they still possess a large youth population.
Countries in phase three have yet lower birth and death rates and overall total fertility rates close to the widely-accepted replacement level of 2.1 children per woman; these countries are home to approximately 38 percent of the world’s population and include India, Malaysia, and South Africa. Phase three countries often still possess a disproportionately large working age population as an echo of their previous growth, which allows them to take advantage of the “demographic dividend.”
Finally, phase four countries have the lowest birth and death rates, with some even seeing negative growth as total fertility rate falls at or below the natural replacement rate; countries in this phase include most of Europe and other developed countries, such as Japan and the United States (though relatively high levels of immigration keeps overall growth higher).
The data sheet shows that most developing countries still remain in the earlier phases of demographic transition, especially those in sub-Saharan Africa and the Middle East. Relatively recent public health improvements in these countries have decreased death rates at a rapid rate, and though total fertility rates (TFR) have declined as well, they have not kept the same pace: “This lag between the drop in death rates and the drop in birth rates produced unprecedented levels of population growth,” wrote Haub and Gribble in the Population Bulletin.
A Tale of Two Worlds
The data sheet authors observe that poverty is strongly associated with countries which are stalled in their progression through the demographic transition:Poverty has emerged as a serious global issue, particularly because the most rapid population growth is occurring in the world’s poorest countries and, within many countries, in the poorest states and provinces…Relatively high population growth rates make it more difficult to lift large numbers of people out of poverty.
In her primer video on demographic security for ECSP, demographer Elizabeth Leahy Madsen said, “we are in an era of unprecedented demographic divergence,” and characterized the phenomenon of population trends moving simultaneously in different directions as “rapid” and “unprecedented.”
Haub used Italy and the Democratic Republic of Congo (DRC) as an example to illustrate the divide. Although both countries currently sit at around 60 million people each, Italy is only projected to grow by 2 million through 2050, while the DRC is projected to reach a staggering 149 million people. Italy has a gross national income per capita of about $35,000, whereas DRC has only $180 per capita, according to the World Bank.
This observation has been corroborated by other demographers: “In 1950, 68 percent of the world’s population resided in developing regions. Today that’s up to 82 percent. But in the year 2050, it’s projected to be 86 percent,” said demographer David Bloom on NPR’s global health blog, Shots.
Demography ≠ Destiny
A poor country is not necessarily tethered to its projections, which are based on assumptions, said the authors, “but when, how, and whether [the demographic transition] actually happens cannot be known.”
Low development indicators do not always dictate that a country will lag in a demographic transition. “Government commitment to a policy to lower [birth rates] has succeeded quite well in countries with a low level of development,” said Haub in a 2008 PRB discussion on the demographic divide. Bangladesh and Iran are two examples of countries that significantly affected their demographic trajectories in the 20th century with targeted programs.
Proactivity certainly plays a role, as the PRB “7 Billion and Counting” video puts it (see above): “Understanding how and why the world’s population is growing will help nations better plan for the future…and for future generations.”
Sources: NPR, Population Reference Bureau, UN-DESA, UNICEF, World Bank.
Video and Image Credit: “7 Billion and Counting,” courtesy of PRB’s Youtube channel, and stages of demographic transition courtesy of PRB’s 2011 Population Data Sheet. -
Sajeda Amin on Population Growth, Urbanization, and Gender Rights in Bangladesh
›“One of the reasons why population grows very rapidly in Bangladesh is women get married very early and have children very early,” the Population Council’s Sajeda Amin told ECSP in a recent interview. “So even though they are only having two children, they are having them at an average age of around 20. As demographers would say, women ‘replace’ themselves very rapidly.”
Largely through the promotion of contraceptive use, family planning programs implemented over the past 35 years by the Bangladeshi government and a variety of NGOs have helped lower the country’s total fertility rate to 2.7 from 6.5 in the mid-1970s. To build on this progress, the Population Council has joined a consortium of other organizations – including the Bangladesh Legal Aid and Services Trust, Marie Stopes International, and We Can End All Violence Against Women – to launch the Growing Up Safe and Healthy (SAFE) project in Amin’s native Dhaka and other Bangladeshi cities.
Currently nearing the completion of its first year, the four-year initiative has several aims, among them increasing access to reproductive healthcare services for adolescent girls and young women and bolstering social services to protect those populations from (and offer treatment for) gender-based violence. The project also looks to strengthen laws designed to reduce the prevalence of child marriage – a long-standing Bangladeshi institution that keeps population growth rates high while denying many young women the opportunity to pursue economic and educational advancement.
A Focus on Gender and Climate
Amin says the SAFE project boasts several qualities that collectively set the initiative apart from similar-minded programs in Bangladesh dealing with gender and poverty. These include a strong research component incorporating quantitative and qualitative analysis; the holistic nature of the program, which incorporates educational outreach, livelihood development, and legal empowerment; a commitment to working with both male and female populations; and an emphasis on interventions targeting young people, with the hope that such efforts will allow adolescents to make better-informed decisions about future relationships and reproductive health, thus reducing the likelihood of gender-based violence.
Finally, while many existing gender-based programs focus exclusively on rural communities, Amin points out that the SAFE project also stands apart because of its focus on the country’s rapidly expanding urban areas. To date, the initiative is focusing many of its early interventions in a Dhaka slum that has seen an influx of rural migrants in recent years due to climate-change impacts in the country’s low-lying coastal areas.
“A lot of the big problems in Bangladesh now are climate-driven in the sense of creating mass movements out of areas that are particularly vulnerable or have been hit by a major storm,” Amin said. “Usually these are people who, once they lose their homes and their livelihoods, will have no choice but to move to urban areas, and that’s a process that is kind of a big outstanding issue in Bangladesh now.”
By building programming around girls and young women in such communities, the SAFE project is looking to spark change from the bottom up, prioritizing the unmet health and social needs of some of Bangladesh’s most vulnerable populations.
The “Pop Audio” series is also available as podcasts on iTunes.
Sources: Global Post, Ministry of Health and Family Welfare (Bangladesh), Shaikh and Becker (1985). -
What’s the Impact of Family Planning in the Developing World? ‘Science’ Magazine’s Population Issue
›“Does Family Planning Bring Down Fertility” in Science’s special July issue on population, author Jocelyn Kaiser engages various experts to explore whether family planning programs actually help to reduce high fertility. Social demographer Amy Tsui of Johns Hopkins University argues that surveys indicating “unmet need” in family planning “don’t tell us anything about causation.” On the other hand, Martha Campbell, a lecturer at the University of California, stressed that in countries such as Niger where the population could soar from 16 million today to 58 million by 2050, “You can’t expand [schools] fast enough.” Thus, focusing on family planning is indispensable and “the benefits [will] far outweigh the costs.”In “Population Policy in Transition in the Developing World,” also published in the population issue of Science, authors John Bongaarts and Steven Sinding explain why there has been renewed interest on family planning in developing countries. Since rapid population growth in the poorest countries is hampering development, “economists, once notably skeptical, increasingly acknowledge that fertility decline has beneficial economic effects for nations and families,” they write. Moving forward, Bongaarts and Sinding suggest family planning needs to be at the forefront of population and development discussions. Not only is family planning “cost effective,” they write, but it is responsible for “relieving population pressures, stimulating economic development, improving health, and enhancing human freedom.”
See the full line-up of articles from Science’s population edition here. -
Population, Health, and Environment Approaches in Tanzania
›“Quality of life, human health, food security, and biodiversity are all connected,” said Elin Torell, research associate for the BALANCED Project and the University of Rhode Island Coastal Resource Center. Torell was joined at the Wilson Center on July 19 by Patrick Kajubili from the Tanzania Coastal Management Partnership, and Alice Macharia, director of the East Africa Program at the Jane Goodall Institute to discuss the importance of integrated population, health, and environment (PHE) initiatives that work to simultaneously improve health and livelihoods, manage natural resources, and conserve ecosystems in Tanzania.
Building Resilient Coastal Communities
The Coastal Resources Center’s work in Tanzania’s Saadani National Park provides an example of an integrated PHE approach that sustains the flows of environmental goods and services, maintains biological diversity, and empowers and improves the wellbeing of local residents, said Torell. Since 1996, the CRC has focused on protecting sea turtles, promoting energy-saving stoves, and tracking elephants, while at the same time improving livelihoods through savings and credit associations, eco-tourism, and beekeeping.
“Adding family planning makes a whole lot of sense,” said Torell. There is a high unmet need for family planning in Tanzania and the population is growing rapidly with an average number of 5.6 children per woman. Family planning not only helps families limit and space births but indirectly works to improve food security and human health, reduce demand for scarce natural resources, and empower women, she said.
“Integration is key,” concluded Torell: A coordinated and synergistic approach that meets the varied needs of local communities will be more effective and sustainable than if interventions were delivered independently.
Effective Integration in the Field
“Conceptual linking is not enough,” said Kajubili. “Integration also needs to happen at the organizational and field levels.”
On the ground, the Tanzania Coastal Management Partnership integrates family planning education and services into conservation work, said Kajubili. Peer educators deliver information about family planning, health, and coastal resources management; and community-based distributors deliver family planning services and supplies.
“Now people easily access reproductive health services,” said Kajubili. To date, the program has increased referrals to health centers, promoted contraceptive use, and reduced the distance that women need to travel to receive family planning services.
“Integration makes sense and cents,” said Kajubili. By combining resources, health and natural resource management organizations can potentially reach a broader population while sharing costs.
But “reinforcing the linkages between PHE of course takes time and education,” said Kajubili, highlighting a major challenge to implementing integrated approaches. “Advocacy is needed to overcome cultural and institutional barriers.”
“What About Our Needs?”
“Socio-economic development; family planning and AIDS education; sustainable forestry and agriculture practices; and water and sanitation all underpin and support sustainable natural resource management,” said Macharia.
The Lake Tanganyika Catchment Reforestation and Education Project (TACARE) led by the Jane Goodall Institute was initiated in 1994 to arrest the rapid degradation of land through tree planting and forest degradation, said Macharia. “But at some point, the communities raised the question: What about our own needs?” she said.
Community members prioritized the need for health services, education, clean water, and financial capital. But environmental degradation was not seen as a major issue, suggesting a need for a more integrated approach to TACARE’s conservation efforts.
“Integrated programs including population, health, and environment activities are cost-efficient and add value to conservation goals,” said Macharia. By responding to the needs of the community, the integrated approach adopted by TACARE has gained more credibility among local people, while a strong focus on building local capacity has helped to ensure sustainability of the program.
While there are many challenges to implementing and maintaining integrated PHE programs, “partnerships at the local, district, and national level are key to making this a success,” concluded Macharia.
Sources: Population Reference Bureau.
Photo Credit: “Environment near Vumari Village,” courtesy of flickr user treesftf. -
Reducing Health Inequities to Better Weather Climate Change
›In an article appearing in the summer issue of Global Health, Dr. Margaret Chan, director-general of the World Health Organization (WHO), brings to light what she calls the starkest statistic in public health: the vast difference in the mortality rates between rich and poor countries. For example, the life expectancy of a girl is doubled if she is born in a developed country rather than in a developing country. Chan writes that efforts to improve health in developing countries now face an additional obstacle: “a climate that has begun to change.”
Climate change’s effect on health has increasingly moved into the spotlight over the past year: DARA’s Climate Vulnerability Monitor measures the toll that climate change took in 2010 on human health, estimating some 350,000 people died last year from diseases related to climate change. The majority of these deaths took place in sub-Saharan Africa, where weak health systems already struggle to deal with the disproportionate disease burden found in the region. The loss of “healthy life years” as a result of global environmental change is predicted to be 500 times greater in poor African populations than in European populations, according to The Lancet.
The majority of these deaths are due to climate change exacerbating already-prominent diseases and conditions, including malaria, diarrhea, and malnutrition. Environmental changes affect disease patterns and people’s access to food, water, sanitation, and shelter. The DARA Climate Vulnerability Monitor predicts that these effects will cause the number of deaths related to climate change to rise to 840,000 per year by 2030.
But few of these will be in developed countries. With strong health systems in place, they are not likely to feel the toll of a changing environment on their health. Reducing these inequities can only be achieved by alleviating poverty, which increases the capacity of individuals, their countries, and entire regions to adapt to climate change. It would be in all of our interests to do just this, writes Chan: “A world that is greatly out of balance is neither stable nor secure.”
Sarah Lindsay is a program assistant at the Ministerial Leadership Initiative for Global Health and a Masters candidate at American University.
Sources: DARA, Global Health, The Lancet, World Health Organization.
Image Credit: Henry J. Kaiser Family Foundation and the World Health Organization. -
Lakis Polycarpou, Columbia Earth Institute
The Year of Drought and Flood
›August 1, 2011 // By Wilson Center StaffThe original version of this article, by Lakis Polycarpou, appeared on the Columbia Earth Institute’s State of the Planet blog.
On the horn of Africa, ten million people are now at risk as the region suffers the worst drought in half a century. In China, the Yangtze – the world’s third largest river – is drying up, parching farmers and threatening 40 percent of the nation’s hydropower capacity. In the U.S. drought now spreads across 14 states creating conditions that could rival the dust bowl; in Texas, the cows are so thirsty now that when they finally get water, they drink themselves to death.
And yet this apocalyptic dryness comes even as torrential springtime flooding across much of the United States flows into summer; even as half a million people are evacuated as water rises in the same drought-ridden parts of China.
It seems that this year the world is experiencing a crisis of both too little water and too much. And while these crises often occur simultaneously in different regions, they also happen in the same places as short, fierce bursts of rain punctuate long dry spells.
The Climate Connection
Most climate scientists agree that one of the likely effects of climate will be an acceleration of the global water cycle, resulting in faster evaporation and more precipitation overall. Last year, the Proceedings from the National Academy of Sciences published a study which suggested that such changes may already be underway: According to the paper, annual fresh water flowing from rivers into oceans had increased by 18 percent from 1994 to 2006. It’s not hard to see how increases in precipitation could lead to greater flood risk.
At the same time, many studies make the case that much of the world will be dramatically drier in a climate-altered future, including the Mediterranean basin, much of Southwest and Southeast Asia, Latin America, the western two-thirds of the United States among other places.
Continue reading on State of the Planet.
Sources: Associated Press, The New York Times, Proceedings from the National Academy of Sciences, Reuters, Science Magazine, University Corporation for Atmospheric Research.
Photo Credit: “Drought in SW China,” courtesy of flickr user Bert van Dijk. -
Watch: Alecia Fields on Population, Health, and Environment Advocacy with the Sierra Club
›July 29, 2011 // By Roza Essaw“The issues of population, health, and environment are pretty foreign to a lot of people,” said Alecia Fields, a recent University of Kentucky graduate who participated in a Sierra Club Global Population and Environment Study Tour of Ethiopia last summer as a student fellow.
“I learned about the program, how to be an effective advocate, and I took those tools back to my university on campus and shared it with young people,” said Fields in this interview with ECSP.
Fields came from a women’s health background but found the connections between population, health, and environment (PHE) compelling enough that she wanted to become an advocate on campus. “At first, people don’t think they have a connection to the issue, but once you start talking with people, they really start to see how they are central to a larger issue,” said Fields.
“It is challenging in the United States to see some of the population and environmental issues…but when you go to a developing country, you see the effects right in front of you,” explained Fields. The Sierra Club’s Global Population and Environment Study Tours bring a select group of student advocates abroad to see PHE projects in the field with the aim of creating pro-active messengers of the importance of integrated development in the United States.
Fields visited various sites and organizations in Ethiopia including the Gauraghe People’s Self-help Development Organization (GPSDO), located in the southwest region. “People in Ethiopia have had tremendous success in connecting population, health, and environment within communities and starting integrated programs that work towards development,” said Fields.
Going to Ethiopia provided Fields with concrete examples of the importance of PHE and allowed her to share her experience with young people through meaningful illustrations and moving stories.
“A lot of it deals with figuring out where people are in their attachment to the subject…and try to figure out how that program can connect to them,” she said.
