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.

“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.