“Sometimes we make sure that we catch enough rainwater to use or we would have to search out the creeks to for water clean enough to drink,” said Guyanese villager Fabian George in a June interview with the United Nations University. The negative effects of a mining boom fueled by surging gold prices have become so widespread in the small South American country, which is about the size of Idaho, that the government has temporarily stopped issuing new gold and diamond mining permits.

June’s Rio + 20 Conference on Sustainable Development left environmentalists little to cheer about. Kumi Naidoo, executive director of Greenpeace International, called the meeting “a failure of epic proportions.” And Washington Post reporter Juliet Eilperin said the conference “may produce one lasting legacy: convincing people it’s not worth holding global summits.”

In late July, Iran’s government announced that it would no longer fund family planning programs, a dramatic reversal following 20 years of support. The change is especially abrupt for a country that has been lauded as a family planning success story, with thorough rural health services and an educated female population contributing to one of the swiftest demographic transitions in history.

“It is plausible that key transitions in human evolutionary history have been driven in large part by climate change,” write Eugene A. Rosa and Thomas Dietz in “Human Drivers of National Greenhouse-Gas Emissions,” a literature review published by Nature Climate Change. “Changes in climate will doubtless be a key force in the future evolution of social systems, including all aspects of social, economic, and political life, while impinging on the health and well-being of the individuals who populate them.” Rosa and Dietz cite numerous studies to argue that nearly every facet of society will be affected by climate change. “The critical point,” they write, “is that population, affluence, technology, and all other drivers act not alone or additively but in a multiplicative fashion.” For example, rapid population growth can lead to an increase in urbanization, which generates “substantial demand for goods and services that can induce emissions in distant places.” They conclude that huge changes must be made in technology and consumption in order to combat the effects of climate change that are being caused by a growing population and an increasingly affluent world.

The original version of this article, by Lawrence K. Altman, appeared on The New York Times.

Is the world on the verge of ending the AIDS epidemic and creating an AIDS-free generation, even though a cure and a vaccine are still distant hopes?

The original version of this article, by Richard Cincotta, appeared on the National Intelligence Council’s Global Trends 2030 Blog. It is the first post in a series on population aging, featuring Jack Goldstone, Richard Jackson, Jennifer Dabbs Sciubba, Ronald Lee, Andrew Mason, Toshi Yoshihara, Elizabeth H Stephen, David Coleman, and Eric Kaufmann.

This series, Population Aging to 2030, begins with an introductory essay aimed at familiarizing readers with some of the demographic and geographic particulars of this phenomenon, and with several key demographic terms. The term most in need of definition is, of course, “population aging.”

The original version of this article, by Michael Kugelman, appeared on SustainableSecurity.org.

On May 11, the UN approved new international rules to govern how land is acquired abroad. These Voluntary Guidelines (VGs), the outcome of several years of protracted negotiations, are a response to growing global concern that nations and private investors are seizing large swaths of overseas agricultural land owned or used by small farmers and local communities for food, medicinal, or livelihood purposes. FAO head Jose Graziano da Silva describes the VGs as “a starting point that will help improve the often dire situation of the hungry and poor.”

In “Chaotic Climate Change and Security,” published in the June issue of International Political Sociology, Maximilian Mayer traces the transformation of climate change from a long-term problem to something that has taken on a new urgency in recent years. Understanding the non-linear nature of climate change – the “abrupt changes” that can come as environmental thresholds are crossed – has led to the securitization of the environment, writes Mayer. Unfortunately, the “doomsday rhetoric of scientists and campaigners about ‘tipping points’ has apparently failed to spur governments toward negotiating a meaningful agreement.” Climate change skepticism still exists, he points out, and even those who are convinced of the potential negative impacts of environmental change on state security have failed to reverse detrimental actions, choosing instead to focus on ameliorating the effects of change on their individual states. As a replacement for these failed frameworks, Mayer suggests that actor-network theory should be used as it better accounts for the interconnected nature of climate change.