In terms of groundwater depletion, “Yemen and Gaza are probably the two places worst off in the Middle East,” Aaron Wolf told ECSP in a recent interview. Wolf, a water expert and geography professor at Oregon State University, said population growth across the broader Middle East region has led to intensified groundwater pumping in recent years. This trend has raised the prospects for water-related conflict down the road, as countries drain their groundwater stocks faster than the aquifers can recharge. Potentially complicating matters further, said Wolf, is that most aquifers in the Middle East cross international boundaries.

“For the first time in human history, more than one half of the world’s population now lives in urban areas, and some of the largest and fastest growing population centers in the world – countries like India, China, parts of sub-Saharan Africa – are in areas where water resources are becoming more and more scarce,” said Water.org’s Rich Thorsten in a recent interview with ECSP.

Thorsten serves as director of international programs for Water.org, which partners with local communities, governments, and NGOs across Central America, South Asia, and Africa to bring improved water sanitation to at-need rural and urban populations. He emphasized that ensuring access to clean water has a number of positive spillover effects, ranging from improved prospects for economic development to greater social stability, since access to non-polluted water supplies removes one potential source of tension within and between communities.

“A lot of cities are trying to become green cities,” said Karen Seto in part two of an interview with ECSP about her recently published article, “A Meta-Analysis of Global Urban Land Expansion,” co-authored with Michail Fragkias, Burak Güneralp, and Michael K. Reilly. “I think one of the main policy implications of our study is that how a city urbanizes is critical, because one of the things we are finding is that urban land is growing faster than urban population, and in some cases it is growing much faster.”

“When we think about the environmental impacts of rapid urbanization, we really need to unpack what we mean by ‘urbanization,’” said Karen Seto, an associate professor in Yale University’s School of Forestry and Environment Studies, in this interview with ECSP. “There is the demographic component, where more people are living in cities; there is economic urbanization, which is where livelihoods and economies are becoming more urban rather than rural; and then there is the land component – the conversion of land from agriculture and other ecosystems to become urban.”

Seto is the lead author of a new article, “A Meta-Analysis of Global Urban Land Expansion” (with Michail Fragkias, Burak Güneralp, and Michael K. Reilly), which uses satellite imagery to help document the physical expansion of urban areas in developed and developing nations between 1970 and 2000.

“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.

“By reducing population growth, we are going to have a better chance of sustaining the gains of an environmental conservation project,” said Leona D’Agnes in this interview with ECSP. D’Agnes, a technical advisor to PATH Foundation Philippines, served as lead author on a research article published late last year in Environmental Conservation titled, “Integrated Management of Coastal Resources and Human Health Yields Added Value: A Comparative Study in Palawan (Philippines).” The study provided concrete statistical evidence that integrated development programming incorporating population, health, and the environment (PHE) can be more effective in lowering population growth rates and preserving critical coastal ecosystems than single-sector development interventions.

In the southern Philippines, the innovative IPOPCORM program “worked in areas where there is high…marine biodiversity, high population, and high population momentum, which means…about 40 percent of the population are 15 years and below,” Joan Castro told ECSP in this interview. Castro, the executive vice president of PATH Foundation Philippines, Inc., recently spoke at the Wilson Center on the state of integrated development efforts in her country and elsewhere.

“The whole push for population control or to stabilize populations in Africa in the ’70s and the ’80s mostly came out of the West,” said Eliya Zulu of the African Institute for Development Policy (AFIDEP) in this interview with ECSP. Then new research brought to light the fact that many women in Africa actually wanted to control their fertility themselves, but they didn’t have access to family planning.

“It kind of put the African leaders who really didn’t want to talk anything about fertility control and so on in a fix,” Zulu said. “Because all of sudden now it was the African women themselves who are saying we need these services – it was not an imposition from the West.”