Migration is an “extreme” form of climate adaptation, but it does pay off for some, write Md. Monirul Islam et al. in a new article in the journal Climatic Change. In a study analyzing two Bangladeshi fishing communities, one long-established, the other the result of migration, the authors examine the effects of climate-induced migration on livelihood vulnerability.

The May edition of Reproductive Health Matters is a special edition on sustainable development and reproductive health and rights. Our own Roger-Mark De Souza writes that in the quest to build resilience, development practitioners can learn from integrated population, health, and environment (PHE) programs.

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.

As climate change threatens more extreme weather, it is becoming more important to incorporate disaster risk reduction into poverty-reduction efforts, writes the Overseas Development Institute in a new report. The authors of The Geography of Poverty, Disasters, and Climate Extremes in 2030 argue that the hard-won gains of development are threatened by vulnerability among the poorest to climate change disasters, especially droughts. “Up to 325 million extremely poor people will be living in the 49 most hazard-prone countries in 2030, the majority in South Asia and sub-Saharan Africa,” write Andrew Shepherd et al. Using an index measuring the risk of a nation’s exposure to natural disasters as compared with a nation’s vulnerability to extreme poverty (income less than $1 daily), the report singles out 11 nations at high risk in both categories.

What are the environmental implications of changing household sizes? A recent article by Mason Bradbury, M. Nils Peterson, and Jianguo Liu, published in Population and Environment, analyzes data from 213 countries over 400 years and finds the average number of occupants per home tends to decline as population grows. This dynamic, they write, indicates that accommodating housing could prove to be one of “the greatest environmental challenges of the twenty-first century.” As countries develop and urbanize, “according to convergence theory, household size decreases (often from greater than five to less than three).” Other cultural shifts, like increasing divorce rates, urban sprawl driven by rising affluence, decreasing numbers of multigenerational households, and larger houses (in the United States, homes more than doubled in size between 1950 and 2002, according to the article) compound the issue. As population growth continues in parts of the world, these trends pose critical questions for conservation and environmental sustainability, since “households are the end consumers of most natural resources and ecosystem services.”

“The size and growth of the human population is putting unprecedented pressure on natural resources,” reports the first major publication by the Global Partnership for Oceans. The World Bank launched the consortium of more than 140 government, NGO, and private sector groups at the Rio+20 UN Conference on Sustainable Development as a means to bring targeted investment to reverse ocean health decline and encourage sustainable development. On October 16, the Partnership’s Blue Ribbon Panel released Indispensable Ocean: Aligning Ocean Health and Human Well-Being, which encourages members to prioritize five principles: sustainable livelihoods, social equity, and food security; a healthy ocean; effective governance systems; long-term viability; and capacity building and innovation. Selection criteria for investments accompany each principle, including requirements like addressing problems of food affordability and access, demonstrating potential for improvements in human health, and building resilience to future conditions. “The good news is that we stand at a point in history where it is neither too late nor impossible to turn the tide of change that is currently sweeping across the ocean,” panel chair Ove Hoegh-Guldberg concludes.