“Right now, half the world’s population – some 3 billion people – are under the age of 25,” began Laurie Mazur on the “Population, Climate, and Consumption” panel at the Society for Environmental Journalists 20th Annual Conference. “It’s the largest generation ever that’s coming of age, and the choices that those young men and women make about childbearing will determine whether world population…grows to anywhere between 8 and 11 billion by the middle of this century.”

“The good news is that everything we need to do to slow population growth is something we should be doing anyway,” she continued. Mazur is the author of A Pivotal Moment: Population, Justice, and the Environmental Challenge and director of the Population Justice Project.

She was joined on the panel by Brian O’Neill, who spoke about a new study examining the impact of demographics on carbon emissions, and Jack Liu, who spoke about the impact of household size on emissions in China.

The “Pop Audio” series offers brief clips from ECSP’s conversations with experts around the world, sharing analysis and promoting dialogue on population-related issues. Also available on iTunes.

“I’m thrilled to be back.” That was the sentiment that Roger-Mark De Souza relayed to me, in his famous lilting baritone, about becoming the new vice president of research and director of the climate program at Population Action International (PAI). De Souza has long been a leading voice on integrated development programs that feature population, health, and environmental (PHE) dimensions. But three years as the Sierra Club’s director of foundations and corporate relations took him away from day-to-day work on these issues.

In his new posts, Roger-Mark will lead PAI’s research team in establishing a strong evidence base and engaging new allies in the effort to support healthier women and families, according to PAI. “Roger-Mark’s diverse research experience makes him an ideal fit for PAI as we undertake critical projects on reproductive health, population and environment issues,” said PAI President and CEO Suzanne Ehlers in a press release.

After a Wilson Center Global Health Initiative event last year, New York Times columnist Nicholas Kristof spoke with ECSP Director Geoff Dabelko about the importance of maternal health issues and what can be done about it.

“You just know that if men had uteruses and were dying at this rate, every country would have a Minister of Paternal Mortality, the Security Council would be meeting…this would be a real international priority,” said Kristof. “It just should not happen that one woman dies a minute for reproducing.” He recently revisited this topic with a column titled, “Birth Control Over Baldness.”

The “Pop Audio” series offers brief clips from ECSP’s conversations with experts around the world, sharing analysis and promoting dialogue on population-related issues. Also available on iTunes.

Contrary to the iconic image of lapping waves submerging low-lying countries, few Pacific islanders are emigrating from their homes due to climate change, according to Australian geographer Jon Barnett of the University of Melbourne.

“Why should we be concerned with scarcity issues?” asks New York University’s Alex Evans. Beyond general population growth, there is also an expanding global middle class that is shifting to more Western diets and consuming more energy, he explains. The net result is that demand for food, water, oil, and land is outpacing supply. These scarcity issues should be grouped together, argues Evans, because you can’t address one without affecting the others.

The “Pop Audio” series offers brief clips from ECSP’s conversations with experts around the world, sharing analysis and promoting dialogue on population-related issues. Also available on iTunes.

From 20-22 September 2010, world leaders will meet in New York City to discuss the United Nations’ “We Can End Poverty 2015” Millennium Development Goals, which include food security, maternal and child health, and environmental sustainability as key objectives, but controversially, make no mention of population. Officially, there is only one small “side session,” organized by Vicky Markham of the Center for Environment and Population, devoted to talking about the MDGs in the integrated context of population, health, and environment (PHE).

Iraq’s Southern Marshes, once the Middle East’s largest and most ecologically diverse wetlands, have survived the Iran-Iraq war, systematic drainage by Saddam Hussein, American invasion, and record-breaking drought. Today, however, the prospects for survival are dimming, as water consumption across the region continues to increase and security remains unsettled. Despite these challenges, the marshes’ location along the Iranian border and their reliance on flow from Turkey upstream offers unique potential for environmental peacemaking in this troubled region.

“If we could do something about unintended pregnancies – which are about 80 million a year – we could dramatically reduce population growth,” and reduce pressure on the environment, says Joseph Speidel in this short analysis from the Environmental Change and Security Program. Speidel discusses the connections between population, health, and environment issues, and offers solutions for the way forward.

The “Pop Audio” series offers brief clips from ECSP’s conversations with experts around the world, sharing analysis and promoting dialogue on population-related issues. Also available on iTunes.