Sub-Saharan Africa is not only the fastest growing region of the world demographically but is also one of the most vulnerable to climate changes, according to many measures, and already facing natural resource scarcity in many areas. These factors combine with existing development challenges to create security threats that African governments and the United States should be concerned with, says ECSP Director Roger-Mark De Souza in a presentation for the Africa Center for Strategic Studies’ introductory course on demography and the environment at the National Defense University.

Environmental security and population dynamics dominated September’s most popular stories. New guest posts on peacebuilding and natural resources in Afghanistan and climate change and conflict accompanied the launch of the latest issue of ECSP Report 14, on food security. Meanwhile, Elizabeth Leahy Madsen’s posts on aging and the second demographic dividend, growth in sub-Saharan Africa, and the latest UN updates to world population projections continued strong.

The original version of this article appeared on the Environment, Conflict, and Cooperation (ECC) Platform.

The Environment, Conflict, and Cooperation team talked to Eileen Hofstetter from the Swiss Agency for Development and Cooperation. She is co-author of the Inventory of Shared Water Resources in Western Asia released at this year’s World Water Week in Stockholm. The Inventory was prepared by the United Nations Economic and Social Commission for Western Asia and the German Federal Institute for Geosciences and Natural Resources.

The BALANCED initiative in Tanzania’s Saadani National Park, “the only terrestrial park in the country with a contiguous marine area,” released the results of a 2012 progress survey on its efforts to create community champions for sustainable natural resource management and family planning awareness. Compared to the last survey in 2009, they found increased family planning awareness, higher contraceptive distribution and usage, and improved discussion and acceptance of contraceptive use from male partners. BALANCED-trained community-based distributors provided contraception to “31 percent of all pill users and 21 percent of all condom users.” Survey results also show a greater community awareness of the impact of individual and collective actions on the surrounding biosphere. The report calls for the continued training of community-based distributors and PHE “champions,” along with outreach to the private sector in order to ensure training and distribution can continue without the permanent presence of the BALANCED Project.

More than 20 percent of the world’s population live in ecological hotspots, places rich in biodiversity but often lacking basic government services. Population, health, and environment – or PHE – programs address compounding stresses in these areas by helping to meet people’s needs for basic health services, including reproductive health care; promoting food security and poverty reduction; and teaching sustainable natural resource management. [Video Below]

China is one of the world’s 12 “mega-biodiversity” countries, but its incredible natural landscapes, from Sichuan’s sparkling, turquoise-colored lakes to Guilin’s dramatic karst topography, are bearing the cost of rapid economic development, writes British environmental photojournalist and videographer Sean Gallagher in a new multimedia e-book.

More than 84 percent of the 2010 world population – 5.8 billion people – consider themselves religiously affiliated, according to a recent study. Religious leaders can therefore have significant influence across a broad range of social, economic, and political issues. Perhaps nowhere is that influence felt more strongly than in debates about reproductive health and rights, and perhaps nowhere are the consequences so large than in poor and marginalized communities.