Showing posts from category urbanization.
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New Study Finds Lower Population Growth Could Cut Carbon Emissions
›A new study, “Global Demographic Trends and Future Carbon Emissions,” finds that slowing population growth by 2050 would meet 16-29 percent of the reductions in carbon emissions necessary to avoid dangerous climate change — roughly equivalent to 1-1.5 “stabilization wedges.” Published in PNAS this week, the article reports the results of a comprehensive assessment, led by Brian O’Neill of the National Center for Atmospheric Research (NCAR), of the impact of demographic changes, including urbanization and aging, on global carbon emissions.
The authors conclude that policies designed to meet the substantial unmet need for family planning and reproductive health services, particularly in the United States and developing countries, would lead to emission reductions that amount to about one-half of a wedge. These results suggest that “family planning policies would have a substantial environmental cobenefit,” they write.
O’Neill will discuss the study’s results and recommendations on Friday morning at the annual Society of Environmental Journalists’ conference in Missoula, MT. The panel, “Population, Climate, and Consumption,” which I helped organize, will be moderated by Ken Weiss of the Los Angeles Times. Weiss wrote on the Times’ Greenspace blog that “the study offers a novel way to quantify how changes in human population influence the buildup of greenhouse gases in the atmosphere.”
To tease out the complex connections between climate, population, and consumption, O’Neill and his coauthors looked beyond population size to delve into household location and composition. They found that urbanization and aging trends will have differential–and potentially offsetting–impacts on carbon emissions.
Aging, particularly in industrialized countries, will reduce carbon emissions by up to 20 percent in the long term. On the other hand, urbanization, particularly in developing countries could increase emissions by 25 percent.
The Taboo Against Mixing Condoms and Climate
Most coverage to date, including the widely distributed press release from the National Science Foundation, overlooked the study’s recommendations to increase access to family planning and meet unmet need for contraception as a climate mitigation strategy.
Unfortunately, that’s the case in many venues: “You don’t see policymakers talking about in the climate negotiations,” climate scientist Richard Somerville told Weiss. Family planning has long been off the table–Mother Jones recently called it “The Last Taboo” – especially at the big climate conferences. At Copenhagen, it was only discussed at side events; NYT’s Andrew Revkin called it the “missing ‘P’ word.“
One of this year’s panelists, Laurie Mazur, who last year published, A Pivotal Moment: Population, Justice and the Environmental Challenge, will likely explore the environmental cobenefits of improving women’s reproductive health. In addition to mitigation, some developing countries have identified family planning as a strategy in their national climate adaptation plans.
Growth Story: Population at SEJ
Friday’s panel is the only one to consider population’s role in environmental issues at this year’s SEJ conference, the premier event for U.S. environmental journalists. Given the issue’s historic marginalization within environmental community, that’s not necessarily surprising.
But there appears to be a growing interest among reporters: last year’s SEJ panel on population moderated by Tim Wheeler of The Baltimore Sun drew a standing-room-only crowd, following a popular 2008 SEJ panel on the topic moderated by Steve Curwood of Living on Earth.
More surprisingly, Friday’s panel is one of less than a handful at this year’s conference to address international environmental issues. I hope next year’s conference in Miami will draw on that city’s vibrant immigrant community and short flights to Latin America and the Caribbean to bring in more international flavor.
Sources: DotEarth, Greenspace, National Science Foundation, Population Action International, UNFPA. -
Meeting the Needs of Latin America’s Rural and Urban Populations
›October 14, 2010 // By Kayly OberThere are two Latin Americas according to demographers. In one of the most urbanized regions of the world, the population of some countries remains highly rural. While countries like Chile, Argentina, and Uruguay are close to 90 percent urbanized, much of Central America, as well as Ecuador, Paraguay, and Bolivia, are only about 50-60 percent urban.
Across the continent, Latin America’s total fertility rate has fallen from almost six children per woman in the 1960s to 2.2 children in 2005. Population growth rates are projected to continue to decline from 1.5 percent in 2010 to roughly 0.75 percent by 2020. But less-urbanized countries continue to experience high population growth in their rural areas, particularly among their large indigenous populations, who are not experiencing the same shifts from high to low fertility.
For example, since 1990, communities surrounding Guatemala’s Sierra de Lacandon National Park have grown by 10 percent each year, with birthrates averaging eight children per woman. These larger communities and households have led to agricultural expansion into the park, which has lost 10 percent of its forest canopy since 1990.
Rural-to-rural migration is also a key, but often overlooked, dynamic as migrants move to other rural areas in search of new land to farm. Between 1961 and 2001, Central America’s rural population increased by 59 percent. This increased population was accompanied by a 15 percent increase in deforestation, totaling some 13 million hectares.
Although many rural areas of Latin America have high fertility rates and expanding populations, they also have a high unmet demand for contraception. Indigenous populations are particularly underserved by health providers for many reasons, including cultural barriers, language, and accessibility. According to the Population Reference Bureau, an estimated 50 percent of indigenous women in the Ecuadorian Amazon do not want another child, yet 98 percent of them do not have access to a modern contraceptive method.
While reaching historically disadvantaged populations in rural communities is not easy, some programs have had considerable success—and saved money—by combining environmental and health efforts. For example, the Guatemalan NGO ProPeten trained more than 80 midwives and health promoters and developed a radio soap opera in both Spanish and Q’eqchi’ to deliver health services and environmental education to the communities living near the Maya Biosphere Reserve.
Given links between rural population growth and agricultural expansion, expanding access to family planning may not only be a cost-effective way to help women reach their desired family size, but also a smart investment in forest conservation and climate mitigation—and perhaps a down-payment on a more secure future for all. -
The Tenth Parallel: Dispatches From the Fault Line Between Christianity and Islam
›The latitudinal tenth parallel — located 700 miles above the equator — constitutes a “faith-based fault line” between Islam and Christianity, said Eliza Griswold at the launch of her latest book, The Tenth Parallel: Dispatches from the Fault Line Between Christianity and Islam at the Wilson Center on September 16, 2010. The former Wilson Center public policy scholar traveled more than 9,000 miles to six countries along the line. One quarter of the world’s Muslim population lives north of the line, while one-fourth of the world’s Christian population lives south of it.
Religious Conflict and Environmental Peacemaking
The tenth parallel is vulnerable to intense religious conflicts, exacerbated by the imposition of colonial-era national borders. Griswold collected stories from tribal leaders, presidents, and missionaries that reveal subtle linkages between religious conflict, politics, and environmental change. “Every single religious conflict I saw had a worldly trigger, whether land, oil, or water,” she said, because these groups tend to self-identify along lines of religion, “even over any kind of ethnicity.”
In the town of Abiay, Sudan, Griswold described a fight “over who’s going to get that oil, and how they’re going to divide themselves. Religion comes in as an overlay, because the north pushes the people of the south farther south by saying, ‘Guess what? We need that land, and why? Because our Muslim people need that land for their cattle,’ but underneath that land runs a river of oil.”
But in these origins of conflict Griswold finds an avenue to peace: “Environmental challenges seem to work well in areas of religious conflict” as a neutral meeting ground, she said.
For example, in the Nigerian city Kaduna, where Christians and Muslims have clashed violently, two former mortal enemies and self-avowed fundamentalists work together to deprogram the youth they trained to protect their faith through violence. At the Interfaith Reconciliation Center, Pastor James (who lost an arm to a group of Muslims) and Imam Muhammed Nurayn Ashafa use practical aspects of living to encourage interfaith dialogue. During Griswold’s visit, it was fuel-efficient cookstoves, “because that’s one of the things Christians and Muslims fight about…whether land, water, oil.”
Such concrete examples of environmental peacemaking offer future policy options for mitigating conflicts in other areas. “The tenth parallel is one of the most sensitive environmental zones in the world…so do I think it’s replicable? Absolutely,” said Griswold.
The Changing Demographics of Religion
Today, “four out of five of the world’s one billion Muslims don’t live in the Middle East; they live in Africa and they live in Asia. More than half of them live along the tenth parallel, and about half of the world’s two billion Christians also live along the tenth parallel,” sais Griswold.
She explained that the migration of Islam to Africa stopped along the tenth parallel because of the tsetse flies and the devastating sleeping sickness they carried.
Later, colonial-era European missionaries arrived, many with “the express purpose of stopping Islam from winning Africa, from spreading south of the tenth parallel,” she said. For example, Britain’s division of Sudan restricted Muslims to the north and Christians to the south, where missionaries developed and constructed the southern Sudanese state.
“Many of these places are failed states…and religion has come in largely to fill the gaps,” said Griswold. “The world is breaking down on tribal lines and religion is the largest tribe there is, more so than ethnicity, more so than other global markers.”
Based on population projections, Griswold pointed out that “the center of Christianity, in 2050 will be on the tenth parallel…in Muslim Nigeria.”
Historical Echoes
Historically, aid and development work along the tenth parallel “was not a secular enterprise,” Griswold said, since most of the aid workers were Christian missionaries. “So there is a very long history and a very strong association between the West and Christianity in many, many places,” she pointed out.
This history has long affected American foreign policy and perceptions of the United States abroad. According to Griswold, “foreign policy [has] come to reflect the interests of selective groups of Americans.” For that reason, “we really need to call for caution in how we allow ourselves to be represented and in the diversity of voices that get out there,” she advised.
For example, the evangelical preacher Franklin Graham met with Bashir in 2003 to ask for the right to proselytize in northern Sudan. In exchange, Bashir hoped to avoid being added to “the American ‘hit list’ after Afghanistan and Iraq,” reported Griswold. Graham told her that in response he took out a George W. Bush re-election pin and said, “Mr. President, I understand you’ll be talking to my president later today. Why don’t you tell him you’re his first voter here in the Sudan?”
In the same vein, Griswold cautioned against perpetuating American ignorance of Muslim culture:We, especially in America, are extremely aware of this fight over who speaks for God. Because I think, when we see what’s happening on the steps of the Lincoln Memorial or at Ground Zero, we’re looking at a struggle inside of a broader Christian context between Franklin Graham and Barack Obama over who a true Christian is. And Islam becomes the easiest bogeyman. The quickest way to whip up fear in followers is to create a shared enemy.
“The single most important finding of the book,” Griswold concluded, “was that the clashes within religions, the clashes between Christians and Christians, Muslims and Muslims, over who has the right to speak for God, are the most important and most overlooked religious conflicts going on today.”
Shawna Cuan is an intern with the Environmental Change and Security Program. Edited by Meaghan Parker.
Photo Credit: “Farmer Harvests Sorghum Seeds in Sudan,” courtesy of flickr user United Nations Photo. -
“All Consuming:” U of M’s ‘Momentum’ on Population, Health, Environment, and More
›August 23, 2010 // By Schuyler NullMinnesota’s Institute on the Environment is only in its third year of operation but has already established itself as an emerging forum for population, health, and, environment issues, due in no small part to its excellent thrice-a-year publication, Momentum. The journal is not only chock-full of high production values and impressively nuanced stories on today’s global problems, but is also, amazingly, available for free.
Momentum has so far covered issues ranging from food security, gender equity, demographic change, geoengineering, climate change, life without oil, and sustainable development.
Highlights from the latest issue include: “Girl Empower,” by Emily Sohn; “Bomb Squad,” with Paul Ehrlich, Bjørn Lomborg, and Hans Rosling; and “Population Hero,” on the fiscal realities of stabilizing growth rates.
The lead story featured below, “All Consuming,” by David Biello, focuses on the debate over whether consumption or population growth poses a bigger threat to global sustainability.Two German Shepherds kept as pets in Europe or the U.S. use more resources in a year than the average person living in Bangladesh. The world’s richest 500 million people produce half of global carbon dioxide emissions, while the poorest 3 billion emit just 7 percent. Industrial tree-cutting is now responsible for the majority of the 13 million hectares of forest lost to fire or the blade each year — surpassing the smaller-scale footprints of subsistence farmers who leave behind long, narrow swaths of cleared land, so-called “fish bones.”
Continue reading on Momentum.
In fact, urban population growth and agricultural exports drive deforestation more than overall population growth, according to new research from geographer Ruth DeFries of Columbia University and her colleagues. In other words, the increasing urbanization of the developing world — as well as an ongoing increase in consumption in the developed world for products that have an impact on forests, whether furniture, shoe leather, or chicken fed on soy meal — is driving deforestation, rather than containing it as populations leave rural areas to concentrate in booming megalopolises.
So are the world’s environmental ills really a result of the burgeoning number of humans on the planet — growing by more than 150 people a minute and predicted by the United Nations to reach at least 9 billion people by 2050? Or are they more due to the fact that, while human population doubled in the past 50 years, we increased our use of resources fourfold?
Photo Credit: “All Consuming” courtesy of Momentum. -
‘UK Royal Society: Call for Submissions’ “People and the Planet” Study To Examine Population, Environment, Development Links
›August 12, 2010 // By Wilson Center StaffBy Marie Rumsby of the Royal Society’s In Verba blog.
In the years that followed the Iranian revolution, when Ayatollah Khomeini returned from exile to Tehran and the country went to war against Iraq, the women of Iran were called upon to provide the next generation of soldiers. Following the war the country’s fertility rate fell from an average of over seven children per woman to around 1.7 children per woman – one of the fastest falls in fertility rates recorded over the last 25 years.
Iran is an interesting example but every country has its own story to tell when it comes to population levels and rates of change. The global population is rising and is set to hit 9 billion by 2050. And whilst fertility rates in Ethiopia are on the decline, its total population is projected to double from around 80 million today, to 160 million in 2050.
Earlier this month, the Royal Society announced it is undertaking a new study which will look at the role of global population in sustainable development. “People and the Planet” will investigate how population variables – such as fertility, mortality, ageing, urbanization, and migration – will be affected by economies, environments, societies, and cultures, over the next 40 years and beyond.
The group informing the study is chaired by Nobel Laureate Sir John Sulston FRS, and includes experts from a range of disciplines, from all over the world. With names on the group such as Professor Demissie Habte (President of the Ethiopian Academy of Sciences), Professor Alastair Fitter FRS (Professor Environmental Sciences, University of York) and Professor John Cleland FBA (Professor of Medical Demography, London School of Hygiene and Tropical Medicine), there’s bound to be some lively discussions.
Linked to the announcement of the study, the Society held a PolicyLab with Fred Pearce, environmental journalist, and Jonathon Porritt, co-founder of Forum for the Future, to discuss the significance of population in sustainable development.
Both speakers have been campaigning against over-consumption for many years. Jonathon Porritt has been a keen advocate for fully funded, fully engaged voluntary family planning in every country in the world that wants it.
“In my opinion, that would allow us to stabilize global population at closer to 8 billion, rather than 9 billion. And if we did it seriously for forty years, that is an achievable goal.” Porritt thinks that stabilizing global population at 8 billion rather than 9 billion would save a large number of women’s lives, and suggests “you cannot ignore the gap between 8 billion and 9 billion if you are thinking seriously about climate change.”
Fred Pearce acknowledges that population matters, but stresses that it is consumption (and how we produce what we produce) that we need to focus on. He feels it is too convenient for us to focus on population.
According to Fred, the global average is now 2.6 children per woman – that’s getting close to the global replacement level of 2.3 children per woman.
“It is no longer human numbers that are the main threat……It’s the world’s consumption patterns that we need to fix, not its reproductive habits,” said Pearce.
The Society will be taking a long look at some of these issues, assessing the latest scientific evidence and uncertainty around population levels and rates of change. The “People and the Planet” study is due for publication in early 2012, ahead of the Rio+20 UN Earth Summit. The Society is currently seeking evidence to inform this study from a wide-range of stakeholders.
The deadline for submissions is October 1, 2010. For more information on submissions, please see the Royal Society’s full call for evidence announcement.
Image Credit: “In Verba” courtesy of the Royal Society. -
Demographics, Depleted Resources, and Al Qaeda Inflame Tensions in Yemen
›July 21, 2010 // By Schuyler NullA second spectacular Al Qaeda attack on Yemeni government security buildings in less than a month is a worrisome sign that the terrorist group may be trying to take advantage of a country splitting at the seams. U.S. officials are concerned that Yemen, like neighboring Somalia, may become a failed state due to a myriad of challenges, including a separatist movement in the south, tensions over government corruption charges, competition for dwindling natural resources, and one of the fastest growing populations in the world.
Wells Running Dry
Water shortages have become commonplace in Yemen. Last year, the Sunday Times reported that Yemen could become the first modern state to run out of water, “providing a taste of the conflict and mass movement of populations that may spread across the world if population growth outstrips natural resources.”
Earlier this year, government forces came to blows with locals over a disputed water well license in the south. Twenty homes were damaged and two people were killed during the resulting eight day stand-off, according to Reuters.
The heavily populated highlands, home to the capital city of Sanaa, face particularly staggering scarcity. Wells serving the two million people in the capital must now stretch 2,600 – 3,200 feet below the surface to reach an aquifer and many have simply dried up, according to reports.
Yemeni Water and Environment Minister Abdul-Rahman al-Iryani told a Reuters reporter that the country’s burgeoning water crisis is “almost inevitable because of the geography and climate of Yemen, coupled with uncontrolled population growth and very low capacity for managing resources.”
Nineteen of Yemen’s 21 aquifers are being drained faster than they can recover, due to diesel subsidies that encourage excessive pumping, loose government enforcement of existing drilling laws, and growing population demand. Qat farmers in particular represent an excessive portion of water consumption; growing the popular narcotic accounts for 37 percent of agricultural water consumption. Meanwhile, according to a study by the World Food Programme this year, 32.1 percent of the population is food insecure and the country has become reliant on imported wheat.
Yemen’s other wells – the oil variety – have long been the country’s sole source of significant income. According to ASPO, oil has historically represented 70-75 percent of the government’s revenue. But recent exploration efforts have failed to uncover significant additions to Yemen’s reserves, and as a result oil exports have declined 56 percent since 2001. The steep decline has pushed Yemeni authorities to look to other natural resources, such as rare minerals and natural gas, but the infrastructure to support such projects will take significant time and money to develop.
The Fastest Growing Population in the Middle East
Despite the country’s limited resources, Yemen’s population of 22.8 million people is growing faster than any other country in the Middle East. According to projections from the Population Reference Bureau, by 2050, Yemen’s burgeoning population is expected to rival that of Spain.
Fully 45 percent of the current population is under the age of 15 – a troubling ratio that is expected to grow in the near future. The charts from the U.S. Census Bureau embedded below illustrate the dramatic growth of the country’s youth bulge from 1995 through 2030.A poor record on women’s rights and a highly rural, traditional society contribute to these rapid growth scenarios. According to Population Action International’s Elizabeth Leahy Madsen, only 41 percent of Yemeni women are literate and their total fertility rate is well over the global average. A recent survey from Social Watch ranking education, economic, and political empowerment rated Yemen last in the world in gender equity. Yemeni scholar Sultana Al-Jeham pointed out during her Wilson Center presentation, “Yemeni Women: Challenges and Little Hope,” that there is only one woman in a national parliament of 301 members and that ambitious political women routinely face systematic marginalization.
A contributing factor is that 70 percent of Yemen’s population live outside of cities – far more than any other country in the region – making access to education and healthcare difficult, especially in the large swaths of land not controlled by the government.
External migration from war-torn east Africa adds to Yemen’s demographic strains. According to IRIN, approximately 700,000 Somali refugees currently reside in country, and that number may grow as the situation in Somalia continues to escalate. Within Yemen’s own borders, another 320,000 internally displaced people have fled conflict-ridden areas, further disrupting the country’s internal dynamics.
Corruption and Rebellion
Competition over resources, perceived corruption, and Al Qaeda activity have put considerable pressure on the Saleh regime in Sanaa. The government faces serious dissidence in both the north and the south, and the Los Angeles Times reports that talk of rebellion is both widespread and loud:Much of southern and eastern Yemen are almost entirely beyond the central government’s control. Many Yemeni soldiers say they won’t wear their uniforms outside the southern port city of Aden for fear of being killed. In recent months, officials have been attacked after trying to raise the Yemeni flag over government offices in the south.
USAID rates Yemen’s effective governance amongst the lowest in the world (below the 25th percentile), reflecting Sanaa’s poor control and high levels of corruption. Some reports claim that up to a third of Yemen’s 100,000-man army is made up of “ghost soldiers” who do not actually exist but whose commanders collect their salaries and equipment to sell on the open market.
The West and Al Qaeda
In testimony before Congress earlier this year, Assistant Secretary of State Jeffrey Feltman called on the Yemeni government to take a comprehensive approach to “address the security, political, and economic challenges that it faces,” including its natural resource and demographic challenges.
The Yemeni government is poised to receive $150 million in bilateral military assistance from the United States. But some experts are critical of that approach: Dr. Mustafa Alani of the Dubai-based Gulf Research Center told UN Dispatch that, “you are not going to solve the terrorist problem in Yemen by killing terrorists,” calling instead for investing in economic development.
USAID has budgeted $67 million for development assistance, economic support, and training programs in Yemen for FY 2010 and has requested $106 million for FY 2011 (although about a third is designated for foreign military financing).
While Yemen’s Al Qaeda presence continues to captivate Western governments, it is the country’s other problems – resource scarcity, corruption, and demographic issues – that make it vulnerable to begin with and arguably represent the greater threat to its long-term stability. The United States and other developed countries should address these cascading problems in constructive ways, before the country devolves into a more dangerous state like Somalia or Afghanistan. In keeping with the tenets of the Obama administration’s National Security Strategy, an exercise in American soft power in Yemen might pay great dividends in hard power gains.
Sources: Association for the Study of Peak Oil – USA, Central Intelligence Agency, Congressional Research Service, Guardian, IRIN, Los Angeles Times, New York Times, Population Action International, Population Reference Bureau, ReliefWeb, Reuters, Social Watch, Sunday Times, U.S. Census Bureau, U.S. Department of State, UN Dispatch, USA Today, USAID, World Food Programme.
Photo Credit: “Yemen pol 2002” via Wikimedia Commons courtesy of the U.S. Federal Government and “Yemen youth bulge animation” arranged by Schuyler Null using images courtesy of the U.S. Census Bureau’s International Data Base. -
Sustainable Development
›Are Women the Key to Sustainable Development?, by Candice Stevens and appearing in Boston University’s Sustainable Development Insights series, asks whether gender-conscious development strategies are the missing link in the three pillars–social, economic, and environmental–of sustainable development. She points out that “An increasing number of studies indicate that gender inequalities are extracting high economic costs and leading to social inequities and environmental degradation around the world.” In the policy world gender-conscious initiatives are often more effective as well. “United Nations and World Bank studies show that focusing on women in development assistance and poverty reduction strategies leads to faster economic growth than ‘gender neutral’ approaches.” Stevens finds that achieving greater gender parity may be the key to better governance, increased growth, and a safer environment.
The Role of Cities in Sustainable Development, by David Satherwaite and also appearing in Boston University’s Sustainable Development Insights series, argues that traditional depictions of cities as dirty and unsustainable are inaccurate. Instead, “…with the right innovation and incentives in place, cities can allow high living standards to be combined with resource consumption that is much lower than the norm in most cities today,” he finds. Satherwaite contends that high-density living arrangements can reduce per capita energy consumption, transportation emissions, and costs of public service provisions like hospitals and schools. However, he warns that none of these potential advantages are guaranteed, and city planners must utilize effective local governance in order to make cities safe, clean, and sustainable. -
Visualizing Human and Natural Resources
›In the policy world, statistics, percentages, and budgets on the order of millions and billions are routinely thrown around. But what do six and a half billion people, 957 tonnes per second, or three trillion dollars really look like?
A visualization of London’s natural resources – grass, trees, and water only – by Adam Nieman.
Visual artist Adam Nieman recently received attention from The New York Time’s Dot Earth Blog for his illuminating scale models of hard-to-envision quantities such as the volume of oil being leaked from the Deepwater Horizon wells, global carbon emissions as measured in “UN Building units per second,” and the relatively small amount of air and water on Earth.
Demographers and sustainability experts often warn about the increasingly smaller allotment of natural resources per capita, but few have illustrated that reality at such a human scale as Nieman does.On a global level, Nieman’s work shows the tremendous population density of the world’s “urban island.” Over half of the global population now lives in cities, which is represented by the grey dot, just 616 km across in “Land-Cover Islands.”
Others seeking to improve quantitative visualizations include David McCandless of the site Information Is Beautiful. Among other things, McCandless has tackled the daunting task of accurately comparing spending in an age of trillion dollar budgets, with his “Billion Dollar Gram.”
Another group, the Dutch firm TD Architects, highlights the disparity between global demographics and the distribution of wealth with “Walled World.”
Nieman’s blog examines the confusion that often occurs at the interface between the political and scientific worlds. This confusion is amply demonstrated by debates over contentious issues such as budget priorities, population growth, and climate change.
Politicians often ask that complex problems be distilled into simple bullet points for speeches and policy documents. However, when it comes to problems of such complexity and scale, pictures like these may be worth a thousand bullet points.
Sources: New York Times, Reuters.
Photo Credit: “Green London (wide)” and “land cover islands” courtesy of flickr user JohnJobby.
