Five million people die each year due to climate- or carbon-related causes, and total mortality by 2030 could total 100 million people, according to new report from DARA, a nonprofit organization that works to improve aid to those affected by conflict and climate change and quantify the global cost of climate change and carbon use. But the report has drawn some fire for being too alarmist.

The fault line between nomadic pastoralists and sedentary agriculturalists in sub-Saharan Africa has emerged as one of the most dominant stories of climate-related conflict. But according to Edna Wangui, a professor at Ohio University who studies communities in Kenya and Tanzania, pastoralism is different from many people’s perceptions.

As the effects of climate change become increasingly apparent, existing poverty and human security challenges are being compounded. Among them, food security is one of the most pressing, especially in the developing world.

Based on a model developed by researchers at Futures Group, a pilot project in Ethiopia reveals that a lower fertility track for some countries could help compensate for the negative effects of climate change on agricultural yields. The study, conducted by MEASURE Evaluation and funded by USAID and The David and Lucile Packard Foundation, suggests incorporating family planning into existing climate change adaptation strategies.

While climate change will undoubtedly have an impact on societies throughout the world, researchers are still debating whether or not it will cause conflict. John O’Loughlin, Frank D.W. Witmer, Andrew M. Linke, Arlene Laing, Andrew Gettelman, and Jimy Dudhia use a quantitative approach to tackle some of “sweeping generalizations” that have come to characterize this debate in a new study, “Climate Variability and Conflict Risk in East Africa, 1990-2009,” published last month in PNAS. They found that while there is “no statistically significant relationship” between precipitation and conflict, increased heat is correlated with more conflict in East Africa. Still, they also found that other factors, like population size and the space-time lag for violence, predict conflict more reliably than either of the climate-related elements.

“Why should you consider taking a demography course in college?” That’s the question Joel Cohen, noted demographer and professor at Rockefeller and Columbia University, looks to answer in a 45-minute introduction to demography produced by the Floating University and released for free on YouTube.

The original version of this article, by Liang Jialin and Jiang Han, appeared in English on ChinaDialogue and in Chinese on Economic Information Daily.

In mid-September, the fishing season got under way as usual in Ningbo, on China’s east coast, after the three-month season when fishing is forbidden. Over 2,000 steel-hulled boats headed out to sea. But, on board, there was little cause for optimism.

The original version of this article, by Keith Schneider, appeared on Circle of Blue. Choke Point: China is a research and reporting initiative produced in partnership between Circle of Blue and the Wilson Center’s China Environment Forum.

Where the wide, muddy waters of the Songhua River flow north from Jiamusu to the Russian border, just 150 kilometers (90 miles) distant, the whole of China’s largest treeless prairie sweeps to the horizon. This expanse of fertile grasslands endures the dark fright of cold Siberian winters and the raging winds of Mongolian summers. At night, in the scattered villages, the sky fills with stars so thick and bright that walking along unlit streets is easy.

Quantifying the role population plays in food security is “an incredibly powerful piece of information,” said Kathleen Mogelgaard in an interview with ECSP. Malawi is a case in point.

Mogelgaard saw the connections between food, population, and climate change firsthand on a recent trip to the southeast African country, whose population of 15 million is largely dependent on subsistence, rain-fed agriculture. “One in five children in Malawi is currently undernourished,” Mogelgaard said, and climate change paints a bleak picture for the future.