In 2007, the world crossed a threshold:  for the first time in human history, the majority of people lived in urban areas. Today, Africa and Asia are the only remaining continents where the rural population outnumbers urban, but they are urbanizing at unprecedented rates. This rapid growth is a double-edged sword. While urbanization spurs economic opportunity and often increases access to infrastructure, it is also widening disparities in health and development, according to a new data sheet by the Population Reference Bureau.

Climate change and conflict – what’s the relationship? In a recently completed set of field-based studies for USAID, the Foundation for Environmental Security and Sustainability set aside “yes-or-no” questions about whether climate change causes conflict and replaced them with pragmatic and politically informed questions about how climate change is consequential for conflict in specific fragile states.

In July, thousands of people attended the 20th International AIDS Conference and the 2014 Girls Summit to work towards an AIDS-free generation and ending child and forced marriage. But such attention is rare; by and large, these girls are invisible to development efforts. [Video Below]

The first time Almaz, a teenager living in rural southern Ethiopia, went to the crowded health care clinic in her village to get contraception, she was told they only helped older women with children. The second time, she waited hours only to find out that her preferred method of contraception was out of stock and she would have to return another day. [Video Below]

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.

The Population Council’s annual report highlights new work from one of the largest organizations doing research on the lives of adolescent girls in the developing world. Of particular note is the Council’s Adolescent Girls Empowerment Program, a four-year study launched in May which will involve 42,000 girls in seven countries – Bangladesh, Burkina Faso, Ethiopia, Guatemala, India, Tanzania, and Zambia. The aim is to evaluate successful strategies for helping girls avoid child marriage, sexually transmitted infections, and unintended pregnancies at a critical juncture in their lives. Council President Peter Donaldson writes that young girls are “one of the potentially most influential figures in the developing world.” A typical 12-year-old girl “in the next few years…will either abandon or continue her schooling, be pushed into marriage and childbearing, or develop a sense of proud ownership of her physical self… As her future is reconfigured, so is ours.”