The “demographic dividend,” a concept that marries population dynamics and development economics, is on the rise in policy circles – Rajiv Shah, Melinda Gates, and African government ministers have all discussed it recently in high-level forums. Most notably for demographers, World Bank Chief Economist Justin Yifu Lin wrote a blog post that focuses on the demographic dividend’s potential to give developing countries a powerful economic boost through declining dependency ratios and a proportionately large working-age population.

The numbers are up: The latest projections from the UN Population Division estimate that world population will reach 9.3 billion by 2050 – a slight bump up from the previous estimate of 9.1 billion. The most interesting change however is that the UN has extended its projection timeline to 2100, and the picture at the end of the century is of a very different world. As opposed to previous estimates, the world’s population is not expected to stabilize in the 2050s, instead rising past 10.1 billion by the end of the century, using the UN’s medium variant model.

Just two days before dozens of North Korean artillery shells fell on the island of Yeonpyeong off the west coast of Korea, a UN study reported that the DPRK was facing acute food shortages heading into the winter.

In a New York Times report, Choi Jin-wook, of the Korea Institute for National Unification in Seoul, called food “the number one issue.” While Choi just last month praised the resumption of food aid from the South to the North as a “starting point of a new chapter in inter-Korean relations,” she told the Times Wednesday that the North is “in a desperate situation, and they want food immediately, not next year.”