Showing posts from category urbanization.
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Population Growth and Climate Change Threaten Urban Freshwater Provision
›May 6, 2011 // By Emanuel FeldBy 2050, more than one billion urban dwellers could face perennial freshwater shortages if major improvements are not made to water management practices and infrastructure, according to a recent study published in the journal PNAS, “Urban Growth, Climate change, and Freshwater Availability.” These challenges will arise as hydrologic changes due to climate change compound “an unprecedented wave of urban growth,” with nearly three billion additional urban residents forecast by 2050. “It is a solvable problem,” the study argues, “but one that will take money, time, political will, and effective governance.”
Using demographic data from the Earth Institute at Columbia University, as well as a variety of climate and city-level demographic scenarios, the researchers estimate per-capita water availability for cities in the developing world, where urban growth will be most rapid. They advise, however, that their findings should be taken as conservative estimates, since the study assumes cities can use all nearby water and does not account for key challenges relating to water quality and delivery to urban centers.
In 2000, 150 million people in developing countries lived in urban areas that could not support their own water requirements (i.e. less than 100 liters available per person per day). By 2050, according to the study, urban population growth alone could bring this figure to 993 million and more than three billion could face intermittent shortages at least one month out of the year. When the researchers expanded the area on which cities can draw upon to include a 100 km buffer zone, these values drop to 145 million and 1.3 billion, respectively.
However, once climate and land use change are included in the models, the aggregate number of people facing perennial shortages rises a further 100 million, if only water stores within the urban area are considered, or 22 million, for the 100 km buffer zone model.
Remarkably, these aggregate figures differ very little among the various demographic and climate scenarios. The particularities of the challenge do however vary at the regional level. Perennial water shortage will generally be limited to cities in the Middle East and North Africa. Seasonal water shortages, on the other hand, will be geographically widespread, although rapidly urbanizing India and China will be especially hard hit.
The study acknowledges the temptation to view water shortage “as an engineering challenge.” Still, the lead author, Rob McDonald of The Nature Conservancy, cautions against exclusive reliance on grey infrastructure solutions (e.g. canals and dams) in an article for Nature Conservancy, saying:Some new infrastructure will be needed, of course – that’s the classic way cities have solved water shortages. But especially in parts of the world where there’s lots of cities, just going out farther or digging deeper to get water can’t be the only solution.
Instead, McDonald and co-authors Pamela Green, Deborah Balk, Balazs M. Fekete, Carmen Revenga, Megan Todd, and Mark Montgomery, emphasize the need for cities to encourage more efficient water use by their industrial and residential sectors, as well as the potential to engage the water-intensive agriculture sector in surrounding rural areas.
“Bottom line,” McDonald said in an interview with Robert Lalasz of The Nature Conservancy’s Cool Green Science blog, “don’t think of those high numbers as a forecast of doom. They are a call to action.”
Emanuel Feld is a student at Yale University studying economics and the environment.
Sources: Cool Green Science, PNAS, The Nature Conservancy.
Photo Credit: Adapted from “Chennai prayed too hard…. Part I,” courtesy of flickr user Pandiyan. -
Accessing Maternal Health Care Services in Urban Slums: What Do We Know?
›“Addressing the needs of urban areas is critical for achievement of maternal health goals,” said John Townsend, vice president of the Reproductive Health Program at the Population Council. “Just because there is a greater density of health services does not mean that there is greater access.”
Townsend moderated a discussion on the challenges to improving access to quality maternal health care in urban slums as part of the 2011 Maternal Health Dialogue Series with speakers Anthony Kolb, urban health advisor at USAID; Catherine Kyobutungi, director of health systems and challenges at the African Population Health Research Center; and Luc de Bernis, senior advisor on maternal health at the United Nations Population Fund (UNFPA). [Video Below]
Mapping Urban Poverty
“Poverty is becoming more of an urban phenomenon every day,” said Kolb. With over 75 percent of the poor in Central Asia and almost half of the poor in Africa and Asia residing in cities and towns by 2020, “urban populations are very important to improving maternal health,” he added.
Collecting accurate data in informal settings such as slums can be very challenging, and there is often a “systematic undercounting of the urban poor,” said Kolb. Data often fails to capture wealth inequality in urban settings, and there is often a lack of attention to the significant variability of conditions between slums.
Kolb also warned about the risk of generalization: “Slums and poverty are not the same.” In practice, there is not a standardized definition of what constitutes a slum across countries, he said. “It is important to look at different countries and cities individually and understand how inequality is different between them.” Slum mapping can help to scope out challenges, allocate resources appropriately, and identify vulnerability patterns that can inform intervention design and approach, he said.
Maternal Health in Nairobi Slums
Addressing the maternal health needs of the nearly 60 percent of urban residents who live in slums or slum-like conditions will be a critical step to improving maternal health indicators of a rapidly urbanizing Kenya, said Kyobtungi.
Only 7.5 percent of women in Kenyan slums had their first antenatal care visit during their first trimester of pregnancy and only 54 percent had more than three antenatal care visits in all – rates significantly lower than those among urban women in non-slum settings.
“In some respects, [the urban poor] are doing better than rural communities, but in other ways they are behind,” said Kyobtungi. But, she said, there are many unique opportunities to improve maternal health in slums: “With these very high densities, you do have advantages; with very small investments, you can reach many more people”
Output-based voucher schemes – in which women pay a small fee for a voucher that entitles them to free, high-quality antenatal care, delivery services, and family planning – have been implemented to help poor, urban women access otherwise expensive services. But poor attitudes towards health care workers, transportation barriers, and high rates of crime still prevent some women from taking advantage of these vouchers, said Kyobtungi.
The majority of maternal health services in slums are provided by the private facilities, though size and quality vary widely. “There is a very high use of skilled attendants at delivery, but the definition of skilled is questionable,” said Kyobtungi
“Without supporting the private sector,” Kyobutungi said, “we cannot address the maternal health challenges within these informal settlements.” Combined with an improved supervision and regulation system, providing private maternal health facilities with training, equipment, and infrastructure could help to improve the quality of services in urban slums, she concluded.
Reducing Health Inequalities
“While we have evidence that health services, on average, may be better in urban areas than in rural areas, this often masks wide disparity within the population,” said de Bernis. “Reducing health inequities between and within countries is a matter of social justice.”
When it comes to family planning, total fertility rates are lower in cities, but “the unmet need…is still extremely important in urban areas,” explained de Bernis. Many poor women in cities, especially those who live in marginalized slum populations, do not have access to quality reproductive health services – a critical element to reducing maternal morbidity and mortality rates.
Economic growth alone, while important to help improve the health status of the poor in urban settings, will not solve these problems, said de Bernis. To reduce health disparities within countries, de Bernis advocated for “appropriate social policies to ensure reasonable fairness in the way benefits are distributed,” including incorporating health in urban planning and development, strengthening the role of primary health care in cities, and putting health equity higher on the agenda of local and national governments.
Event Resources:Source: African Population Research Center, United Nations Population Fund.
Photo Credit: “Work Bound,” courtesy of flickr user Meanest Indian (Meena Kadri). -
Book Launch: ‘The Future Faces of War: Population and National Security,’ by Jennifer Dabbs Sciubba
›“Demographic trends by themselves are neither inherently good nor bad. It’s really a state’s ability to address these issues that can determine the outcome,” said Jennifer Dabbs Sciubba, the Mellon Environmental Fellow with the Department of International Studies at Rhodes College. At a book launch event at the Wilson Center on March 14 for The Future Faces of War: Population and National Security, Sciubba, along with Deputy Under Secretary Kathleen Hicks of the Department of Defense, discussed the national security implications of demography and its important role in understanding and managing conflicts around the world. [Video Below]
Demography as an Indicator, Multiplier, and Resource
Demography can be thought of in three ways, explained Sciubba: as “an indicator of challenge and opportunity; a multiplier of conflict and progress; and a resource for power and prosperity.”
A country’s age structure can pose a challenge, said Sciubba, because countries with a large percentage of their population under the age of 30 “are about two and a half times more likely to experience civil conflict than states with more mature age structures.” Tunisia’s recent revolution, she said, could be understood as a “story about demography.”
The 26-year-old fruit vendor Mohammed Bouazizi, who set himself on fire on December 17 after being hassled by police, was part of one of the largest age cohorts in Tunisia, those aged 25-29. There are some 64 million young men across the Middle East-North Africa region between the ages of 15 and 30, according to UN estimates. “If his death was the spark” for the unrest in the region, Sciubba said, “it’s the underlying demographic trends that were the fodder.”
Yet, Sciubba sees opportunity within this challenge. Citing the work of Richard Cincotta, she said that “states have half a chance – literally 50 percent – of becoming a democracy once their proportion of youth declines to less than 40 percent.” Tunisia has the best chance in the region of becoming a free democracy based on its demography, followed by Libya, where youth aged 15-29 are 43 percent of the adult population.
At the other end of the age structure, some of the world’s most powerful countries, such as Japan, Germany, Italy, France, Russia, and China, are rapidly aging. This aging will “somewhat decrease the ability of these states to project political, economic, and military power” due to a shortage of labor and a smaller pool of funding, said Sciubba.
Countries with transitional age structures, such as India, Brazil, and South Africa, face different security challenges. With a majority of their populations between 15 and 60 years old, there are more people contributing to the economy than are taking away, which could bolster these countries economically and politically (the “demographic dividend”). Global institutions will have to reform and include these countries, she advised, “or else become irrelevant.”
But the defining trend of the 21st century, said Sciubba, is urbanization. While great sources of economic growth, cities are also quite vulnerable to natural disasters and terrorism because of their concentrations of people, wealth, infrastructure, and bureaucracy.
In looking to the future, Sciubba called for continued support for family planning initiatives. “At least 90 percent of future world population growth will take place in less developed countries,” which are least equipped to handle the demands of that growth, she said. In addition, Sciubba recommended that the United States seek out partnerships with countries that have transitional age structures, particularly India, which could be a stabilizing force in a tumultuous region. She also called on the United States to partner with states in the Western Hemisphere and remain open to migration.
Defense and Demography
“Understanding population is critical to our success in being able to prevent conflict, and also managing conflict and crises once we’re involved,” said Hicks, describing the Department of Defense’s (DOD) interest in demography. However, the DOD does not “treat demographics as destiny,” she said, but instead as “one of several key trends, the complex interplay of which may spark or exacerbate future conflicts.”
Recent world events, such as those in the Middle East and North Africa, “have demonstrated how critical our understanding of population is for security practitioners,” said Hicks. Similarly, the recent earthquake and tsunami in Japan dramatically illustrate the vulnerability of large urban areas. Echoing Sciubba’s comments on population aging, she cited “incredible divestments in defense” in Europe, which, she said, “puts us, as a key partner in NATO, at a thinking stage.”
Under Secretary of Defense for Policy Michèle Flournoy is “deeply interested” in demographic issues, said Hicks. She identified other demographic areas of great interest for her office: the youth bulge in Pakistan, urbanization in Afghanistan, the role of highly educated women in Saudi Arabia, the Chinese diaspora in the Americas, Russia’s shrinking population, and various trends in China, including aging, gender imbalance, urbanization, and migration.
Image credit: “Iraq,” courtesy of flickr user The U.S. Army.
Sources: ECSP Report 12, Financial Times, The New York Times, Population Reference Bureau, UN Population Division. -
Watch: David Lopez Carr and Liza Grandia on Rural Population Growth and Development in Guatemala
›March 22, 2011 // By Hannah MarquseeDemographers today are largely concerned with two trends: aging in the developed world, and rapid urbanization in the developing world. The majority of people in the world now live in cities, “but this tiny fraction of people that live in rural areas – concealed by the data because it’s a small fraction – still have very high fertility rates, precisely where protected areas are,” said David Lopez-Carr, associate professor of geography at the University of California, Santa Barbara in this ECSP interview.
“You see a gradient. The more rural, the more remote, the higher fertility,” said Carr. In Guatemala, for example, fertility rates range from below four children per woman in Guatemala City, to as high as eight in the remote Maya biosphere reserve, which is mostly indigenous. “These are the populations that are growing the fastest and the ones who are living in direct proximity and whose livelihoods are predicated directly on the rainforest, whether it’s through resource extraction or…agricultural expansion,” said Carr.
Liza Grandia, assistant professor of international development and social change at Clark University, spent many years working in the Maya biosphere reserve with the Guatemalan NGO ProPeten to address deforestation. However, after years of alternative livelihood projects, “it became clear that many of those efforts would be undermined by population growth and continued migration into the region,” she said in an interview with ECSP.
Grandia and ProPeten conducted a study as part of the Demographic and Health Surveys to examine the linkages between health, population, and environmental trends in the Peten region. Based on these findings, Grandia founded Remedios, a program that partnered with International Planned Parenthood Foundation and the Guatemala Ministry of Health to provide family planning services to “one of the most remote places in Latin America.”
Remedios used mass media, such as the radio soap opera “Between Two Roads,” broadcast in Spanish and Q’eqchi’ Maya, to reach people across this remote region. In the popular soap opera, “the villain is a cattle rancher, the heroine is a midwife, and through the tales of daily life in this village we weave in messages about domestic violence, use of family planning, agrarian problems, like land speculation, and a whole host of other issues that come up in people’s daily lives,” said Grandia. “In three years as a result of that work, the total fertility went from 6.8 to 5.8. To date, 10 years later, it’s dropped to 4.3.” -
Managing the Planet’s Freshwater
›“The impact of human activities on the planet and on its biology has risen to a scale that deserves a commensurate response,” said Tom Lovejoy, professor at George Mason University, introducing a discussion on “Managing the Planet’s Freshwater,” the second of a monthly series led jointly by George Mason University and the Woodrow Wilson Center. Karin M. Krchnak, director of International Water Policy at The Nature Conservancy (TNC), and Dann Sklarew, sustainability fellow at George Mason University, joined Lovejoy to discuss the increasing stress placed by population growth, urbanization, and environmental change on freshwater resources and potential solutions to global water insecurity. [Video Below]
Water: “A Global Crisis”
Water insecurity and pollution is “a global crisis,” said Sklarew. Water scarcity is growing and aquatic biodiversity is declining around the world. According to the World Water Council, over one billion people do not have safe drinking water.
Inadequate water management contributes to these problems, said Sklarew. But, human activities “impact water connectivity, quality, and flows” at all scales, he said, and combined with climate change, have fundamentally altered the global water cycle.
“The water-rich and the water-poor are intimately connected,” said Sklarew. National, international, and global trade “water transfers” often move water from dry rural areas to urban centers, he said. “We’re taking from areas that don’t have [water] and moving water, by itself or via food products, to places where they might actually have more water in their local environment.”
But there are many opportunities – from the incremental to the bold, exciting, and revolutionary – to address these problems, said Sklarew, including growing more food with less water, reducing destructive subsidies, restoring natural river flows via dam re-design or removal, encouraging greener infrastructure in urban areas, and supporting participatory decision-making about water. He also pointed to promoting lower population growth and allowing migration that “brings the people to the water rather than the water to the people” as additional ways to improve water security. In the future, “bio-mimicking and techno-fixes,” may also provide promising solutions, he said.
Clear national goals and a global-scale response are critical to making these solutions a reality, said Sklarew: “Even though these challenges are often local, in the end, we have one interconnected water system.”
Watershed Protection: Innovative Solutions
“I know we all wish that there was a silver bullet for global water challenges,” said Krchnak, “but there’s not just one solution.”
As population grows by an additional 2 billion people before 2050, “solutions must take population growth into account,” said Krchnak. One-third of the world’s population is now subject to water scarcity, which is expected to double in the next 30 years
More water will be necessary to meet growing demands for food, energy, and other commodities, said Krchnak. In particular, “the poor in urban centers will be the dominant challenge for us in the next decades.”
Krchnak described three possible strategies to protect watersheds: market-based mechanisms, integrated water resource management, and incentive approaches.
Water funds, a market-based mechanism in which downstream water users pay for protection of the upper watershed, are one possible way to better manage freshwater, said Krchnak. With the help of local partners, TNC’s Quito Water Fund, for example, creates a sustainable finance mechanism and protects watersheds that supply 2 million people. Similar programs “can be taken to other geographies and replicated across the globe,” she said.
Another TNC program, the Great River Partnership, uses an integrated water resource management strategy that focuses on stakeholder collaboration and working with public and private partners to help create “one vision” for major rivers like the Mississippi, Magdalena, Paraguay-Parana, Yangtze, and Zambezi, said Krchnak.
The Alliance for Water Stewardship uses an incentive-based approach to promote “responsible use of fresh water that is socially beneficial and environmentally and economically sustainable.” One of the main objectives of the Alliance is to develop performance standards and create a certification program that recognizes water providers who work to protect freshwater resources.
Strategies like these may not be appropriate everywhere, and programs need to be adapted to make local implementation possible, said Krchnak, but effectively managing the planet’s freshwater is vital for human health, spiritual and cultural well-being, ecosystems and biodiversity, and economic opportunity.
Sources: World Water Council, UNDP.
Photo Credit: “Rio Magdalena,” courtesy of flickr user Esparta. -
Rural Poverty: The Bottom One Billion
›March 10, 2011 // By Hannah MarquseeThere are currently 1.4 billion people in the world living in extreme poverty, and 70 percent of them – about one billion people – live in rural areas, according to the Rural Poverty Report 2011, published recently by the International Fund for Agricultural Development (IFAD). The two regions most affected by rural poverty are South Asia, home to half of the world’s rural poor, and sub-Saharan Africa, where, team leader Ted Heinemann points in the accompanying trailer, “the number of rural people living in extreme poverty is actually increasing and the proportion is a very high 62 percent.”
The State of Rural Poverty
While the number of rural poor in the world has actually declined sharply since the late 1980s, the decline is due almost entirely to gains made in East and Southeast Asia, particularly China. Despite these gains, rural poverty remains a stubborn challenge in South Asia, Southeast Asia, and sub-Saharan Africa: three-quarters of the poor in these areas are rural, and “the proportion is barely declining, despite urbanization,” says the report. In the Middle East, North Africa, Latin America, and the Caribbean, the majority of the extremely poor live in urban areas.
The number of undernourished people in the world has also declined slightly from its historic high of 2009, after a doubling of international food prices between 2006 and 2008 left a staggering one billion hungry. (However, food prices recently passed 2008’s historic high point, and some have argued they may have been a factor in the recent uprisings in the Middle East and North Africa.) From a high of one billion, the world’s hungry have since decreased to 925 million, a figure that the UN Food and Agriculture Organization nonetheless calls “unacceptably high.” The current rate of decline is far from meeting the MDG target of halving the number of people who suffer from hunger by 2015, says the IFAD report, and with continuing population growth and resource and energy scarcities, they predict little change in the number of hungry worldwide.
Meeting Rising Demand, Sustainably
“Feeding a global population of just over 9 billion in 2050 will require a 70 percent increase in global food production,” says the report. To do this, the report calls for more sustainable agricultural intensification driven by small-holder farmers. “Small-holder agriculture…can offer rural people a route out of poverty just as they can offer the world a solution to meeting its future food needs,” says IFAD President Kanayo Nwanze, in the trailer.
Increasing global agricultural production must be done “in the context of a weakened natural resource base, energy scarcities, and climate change,” says the report. This will require more efficient use of water, less waste, and a shift towards more resilient crops. It will also require linking scientific knowledge with local farmer knowledge in order to create a sustainable, context-specific approach. The report recommends a sustainable small-holder agriculture system that gives rural people incentives to protect their environment, while helping them adapt to climate change.
Providing Economic Opportunities
Since 80 percent of rural households “farm to some extent,” agricultural intensification will be “a primary engine of rural growth and poverty reduction,” says IFAD, especially in the poorest countries. In a statement to announce the launch of the report, Nwanze said, “rather than romanticizing the concept of lifting poor rural women, men, and children above the poverty line, like a plague that can be eradicated by charity and humanitarian gestures, we are advocating the proactive creation of vibrant rural economies.”
But lifting the one billion rural people out of poverty is not just about stimulating rural farm economies, says the report; it also means creating opportunities in the rural non-farm economy to minimize the risk of economic shocks that drive people into poverty in the first place. While agriculture remains central to rural economies, urbanization, globalization, improved information systems, and growing investments in renewable energy all offer opportunities for growth in rural, non-farm economies. Helping rural people take advantage of these opportunities will require multiple investments, says the report: in education to improve the capabilities of rural youth; in infrastructure and social services to make rural areas better places to live; and in governance mechanisms and collective organizing so that rural people can better represent their own interests.
“Robust action is required now to address the many factors that perpetuate the marginalization of rural economies,” says IFAD. “Above all, this action needs to turn rural areas from backwaters into places where the youth of today will want to live and will be able to fulfill their aspirations.”
Sources: AFP, FAO, IFAD, United Nations, The Washington Post.
Video Credit: “Rural Poverty Report 2011,” courtesy of YouTube user IFADTV. -
Engineering Solutions to the Infrastructure and Scarcity Challenges of Population Seven Billion (and Beyond)
›March 9, 2011 // By Hannah MarquseeA recent Institution of Mechanical Engineers (IME) report, Population: One Planet, Too Many People?, argues that “sustainable engineering solutions largely exist for many of the anticipated challenges” of a world population scheduled to top seven billion this year and projected to reach upwards of nine billion by 2050. “What is needed,” write the authors, “is political and social will, innovative financing mechanisms, and the transfer of best practice through localization to achieve a successful outcome.”City lights on the French-Italian border, from the International Space Station.
Since nearly all of the population growth in the next 40 years will occur in the developing world, the report recommends nations adopt five “Engineering Development Goals” (listed below), alongside the Millennium Development Goals, to meet the needs of the world’s growing poor. The report also recommends that developed countries provide technical engineering expertise to developing countries in the model of the UK Department for International Development’s Resource Centers. This assistance will help them implement these goals and “leapfrog” the “resource-hungry, dirty phase of industrialization.”
Population Growth a Threat?
While the report issues a clear call to action for engineers and governments, it does not address the issue of population growth per se, which has caused some to argue that population growth might not be the problem after all. The Independent, for example, initially headlined their article about the report, “Population Growth Not a Threat, Say Engineers,” but changed it after publication to “Population Growth a Threat, Say Engineers.”
The IME authors clearly state that “population increase is likely to be the defining challenge of the 21st century,” and the report provides practical steps governments can take given current population trends. But its focus on “engineering solutions” highlights the ongoing debate between those who argue that technological fixes alone can solve the world’s social and environmental problems, and those who advocate for contraception as a low-cost path to a sustainable world.
“I would love there to be technological solutions to all our problems,” said Nobel Laureate Sir John Sulston at a recent ECSP event on the UK Royal Society’s forthcoming People and the Planet study, but “we’ve got to make sure that population is recognized, while not the sole problem, as a multiplier of many others. We’ve got to make sure that population really does peak out when we hope it will.”
The projections on which the report is based will be difficult to hit without dramatic reductions in fertility, mainly in sub-Saharan Africa – a goal that is nigh impossible without increased investment in access to voluntary family planning. The UN high variant projection, which calculates a much less dramatic decrease in current fertility levels, has world population reaching 11 billion by 2050.
“There is no need to delay action while waiting for the next greatest technical discovery,” write the IME authors. “If action is not taken before a crisis point is reached there will be significant human hardship. Failure to act will place billions of people around the world at risk of hunger, thirst, and conflict as capacity tries to catch up with demand.”
Engineering Development Goals
1. “Energy: Use existing sustainable energy technologies and reduce energy waste.”
Currently, “over 1.5 billion people in the world do not have access to energy,” says the IME report. In addition, global demand for energy is expected to rise by 46 percent by 2030, and the world will need to invest $46 trillion over the next 40 years to shift towards renewable energy sources. The report points out that “there are no insurmountable technical issues in sourcing enough energy for an increasingly affluent larger global population.” Instead, “the difficulties lie in the areas of regulation, financing, politics, social ethics, and international relations.”
2. “Water: Replenish groundwater sources, improve storage of excess water and increase energy efficiencies of desalination.”
Global water consumption, write the IME authors, is predicted to rise 30 percent by 2030 due to population growth and increased energy and agricultural consumption. These numbers are troubling, considering that a recent study in Nature found that more than 1.7 billion people, almost entirely from the developing world, already face chronically high water scarcity.
However, this problem is not simply one of a shortage of water, rather “a case of supply not matching demand at a certain time and place where people are living,” says the IME report. Engineering solutions must involve the capturing and storage of rain water, more cost-effective desalination techniques, and aquifer storage and recovery techniques, says the report. But more importantly, “decision-makers need to become more aware of the issues of water scarcity and work more closely with the engineering profession in finding localized solutions.”
3. “Food: Reduce food waste and resolve the politics of hunger.”
The IME report cites the World Bank’s prediction that demand for agricultural production will double by 2050, due to a combination of population growth, more people turning to meat-heavy diets, and agricultural shortages from extreme weather events. Efficiencies can go a long way towards filling this supply-demand gap, says the IME report. In developed countries an average of 25 percent of edible food is thrown away in the home after purchase, while in developing countries, as much as half of crops are lost before ever reaching market due to lack of adequate transportation and storage infrastructure.
For example, the authors point out that in India, “between 35 percent and 40 percent of fruit and vegetable production is lost each year between the farm and the consumer” – an amount greater than the entire annual consumption of the UK. Americans are also big food wasters. A USDA study found that in one year, 27 percent of all edible food was thrown away in the United States after purchase. Developed countries can significantly increase efficiency “through behavioral change that recognizes the value of food,” says the report.
4. “Urbanization: Meet the challenge of slums and defending against sea-level rises.”
Urbanization “presents one of the greatest societal challenges of the coming decades,” write the IME authors, but cities also represent a “significant opportunity…to be very efficient places to live in terms of a person’s environmental impact.”
According to the World Bank, by 2050, three quarters of the world will live in cities, and nearly all of this growth will occur in the developing world. Already, one third of the world’s urban population live in “appalling slum conditions,” says the IME report. Challenges for the urban poor are especially severe in coastal areas – home to three quarters of the world’s large cities – where they are vulnerable to flooding and extreme weather events, which according to new studies, have increased as a result of climate change.
The report calls for nations to use an “integrated, holistic approach” that brings in engineering expertise early in the planning process to create infrastructure that is individualized to a city’s unique cultural, geographical, and economic needs.
5. “Finance: Empower communities and enable implementation.”
Implementation of the above four goals will require “innovative soft loans and micro-financing, ‘zero-cost’ transition packages, and new models of personal and community ownership, such as trusts,” write the IME authors. Furthermore, communities must play a central role in decision-making in order to find appropriate and local solutions.
In all five of these goals, “barriers to deploying solutions are not technological,” says the report. Instead, they are political and social. Better international cooperation, dialogue, and sharing of expertise between and amongst engineers, decision-makers, and the public, is crucial to implementation.
Sources: Department for International Development, Guardian, The Independent, Institution of Mechanical Engineers, Nature, The New York Times, UN Habitat, United Nations, USDA, World Bank.
Image Credit: “City Lights, France-Italy Border (NASA, International Space Station Science, 04/28/10),” courtesy of flickr user NASA’s Marshall Space Flight Center. -
Mapping Demographics in WWF Priority Conservation Areas
›February 25, 2011 // By Hannah Marqusee“The developing world is urbanizing at a dizzying pace,” yet rural populations living in developing countries are also rapidly increasing, threatening many of the planet’s most biodiverse regions, says a new study, Mapping Population onto Priority Conservation Areas, by David López-Carr, Matthew Erdman, and Alex Zvoleff.
Using comprehensive data from the USAID-sponsored Demographic Health Surveys (DHS), the researchers analyzed population, mortality, and fertility indicators for 10 of the 19 priority places for conservation identified by the World Wildlife Foundation (WWF). These biological hotspots represent parts of 25 countries throughout South Asia, sub-Saharan Africa, and South America, including the Democratic Republic of the Congo, Colombia, Guatemala, Indonesia, Kenya, Nepal, Madagascar, and Thailand.
Urban vs. Rural
The findings confirmed the researchers’ hypothesis that rural areas within WWF priority regions are at a lower state of demographic transition than their urban counterparts, meaning they have higher fertility and infant mortality rates and a younger age structure due to poor access to primary health care, including family planning. Furthermore, women in these regions desire more children than those in urban, non-priority areas, but experience a greater difference between ideal and actual number of children.
For many of the indicators, the differences between urban and rural, and priority and non-priority, regions of the developing world are striking. In urban Asia, the mean predicted population doubling time is 86.1 years; in rural Africa it is only 24.6 years. Urban Asia and South America also have total fertility rates of 1.8 children per woman, while rural Africa’s is 5.2. Infant mortality also ranged from a low of 20 deaths per every 1,000 births in some developing urban areas, to over 100 in rural parts of Coastal East Africa. In the developed world it is less than 10.
There is also consistently less desire among women in priority areas to limit their childbearing. Worldwide, 49.4 percent of women living within priority areas want to limit childbearing, compared to 56.2 percent outside priority areas.
Rural areas in all regions had the highest unmet need for family planning, with the exception of the Congo Basin, where high infant mortality has persisted and dampened women’s desire to limit childbearing. “If much needed health services were provided in the Congo Basin, along with family planning services, child survival rates would increase, and couples would be more inclined to limit overall births,” the study says.
Lower demand for family planning in priority areas is consistent with Caldwell’s theory of intergenerational wealth flows, the paper noted, which explains how in rural agricultural societies, children are economic assets who move wealth to their parents. As countries develop and people gain access to education, healthcare and female empowerment, wealth flows reverse and children become financial burdens. This transition decreases fertility and increases demand for family planning.
Setting Priorities
As WWF plans to scale up its population, health and environment (PHE) programs, this study will help to prioritize places within priority areas that are most in need of PHE intervention and “are most likely to help alleviate negative environmental and social impacts of rapid population growth.” The results of this study show that many areas are ripe for such intervention:Nearly a quarter of households in Coastal East Africa and the Mesoamerican Reef wish to have access to contraception yet their desire remains unfulfilled. Similarly, households within priority places in Coastal East Africa, the Mesoamerican Reef, Amazon and the Guianas, and the Eastern Himalayas wish to have nearly one child fewer than they currently have.
The findings of this study have already informed the planning of several of WWF’s projects in Madagascar and Namibia.
The limited availability and detail of the DHS data was the primary limitation of the study, the researchers noted. The 25 countries examined did not fully cover all WWF’s priority areas – 17 other countries within the priority areas lacked sufficiently comprehensive data for the study. Furthermore, the district or municipality was the smallest unit of analysis possible with DHS data, making it difficult to exactly pinpoint priority communities.
“Geography matters,” write the authors. “Only with further refined data accompanied by qualitative on-the-ground field research can we credibly answer remaining questions.”
Image Credit:“Family Planning: Unmet Need for Family Planning Services” and “Mortality Rate: Child Mortality Rate (Under Age 5)” courtesy of World Wildlife Fund.
Sources: Population Council, World Wildlife Fund.
