The Intergovernmental Panel on Climate Change’s fifth assessment, which has been rolling out in stages since last September, confirms a crucial divide in current climate thinking: efforts to adapt and mitigate to climate change are often considered separately from the vulnerability of people.

Outside of donor and humanitarian aid, South Sudan’s economy is almost entirely dependent on the oil sector – and that sector is in crisis.

What is the future of population and climate change research, and how can this research impact international policy? In a special issue of Population and Environment, environmental and social scientists look at these questions. “One of the most exciting developments in the climate change research community at present is the development of a new generation of climate scenarios,” write Adrian C. Hayes and Susana B. Adamo in the introduction. These can help facilitate more interdisciplinary research.

Democracy is fickle. Many of the competing theories on the best ways to foment and consolidate plural, inclusive governance or predict its rise and fall focus on political and economic forces. Yet a small group of demographers have explored population age structure as a catalyst for and reflection of a host of changes in societies that can affect governance.

The emerging subfield of “security demographics” is interested in how demographic trends, such as youth bulges, high or low fertility rates, and sex ratios affect the security and stability of nation-states and regions. In our research, Andrea Den Boer and I have attempted to show that abnormally high sex ratios – situations where there are significantly more men than women – have been a security concern in the past and may affect security and stability in the future.

Political and economic changes in Burma have been as rapid as they are surprising. In just three years, the country has gone from an isolated military dictatorship to a largely open country that is at least semi-democratic and has formally adopted a market economy. Both the European Union and the United States have eased economic sanctions, and dozens of foreign firms have moved in. Foreign direct investment increased by 160 percent in 2013 alone.

The global water wars are almost upon us!

At least that’s how it seems to many. The signs are troubling: Egypt and Ethiopia have recently increased their aggressive posture and rhetoric over the construction of the Great Ethiopian Renaissance Dam in the headwaters of the Blue Nile, Egypt’s major artery since antiquity. India continues to build new dams that are seen by its rival Pakistan as a threat to its “water interests” and thus its national security. Turkey, from its dominant position upstream, has been diverting the Tigris and Euphrates rivers and increasing water stress in the already-volatile states of Iraq and Syria.