Evaluation is the lifeblood of any development effort – it’s how implementers know if they’re making a difference, determine what to do more or less of, and enables funders to evaluate cost-effectiveness. But it’s also an inexact science, no more so than when it comes to complex interventions that cut across sectors. [Video Below]

Of all the Millennium Development Goals, the maternal health and sanitation targets are among the farthest off track, said Rebecca Fishman, operations and special projects director of WASH Advocates. [Video Below]

Despite the fact that with proper interventions, the likelihood of mother-to-child transmission of HIV is less than five percent, expectant mothers with HIV or AIDS often face intense stigma and marginalization from health care providers around the world. As a result, in some areas, the mortality rate for mothers with HIV is seven to eight times greater than the rate for non-infected women, said Dr. Isabella Danel of the U.S. Centers for Disease Control. [Video Below]

Given growing awareness about environmental change and how it affects human life, it is perhaps not surprising there is also a growing audience for environmental filmmaking. At the 2014 Environmental Film Festival in the Nation’s Capital on March 25, the Wilson Center premiered ECSP’s latest documentary, Scaling the Mountain: Protecting Forests for Families in Nepal. Together with Heart of Iron, a recent film on mining in the Congo Basin, the event took viewers into some of the world’s most remote forests to see how their inhabitants are adapting to rapid changes in the natural resources on which they depend.

Blue Ventures has become a leader in the population, health, and environment (PHE) community through its work with the remote, semi-nomadic Vezo people living along Madagascar’s southwestern coast. In a new short documentary, The Freedom to Choose: Empowering Communities to Live With the Sea, Blue Ventures describes how their approach has helped the Vezo respond to the combined challenges of resource scarcity, poor reproductive health, and unsustainable livelihoods.

For years, the Chepang people have lived off the land in Nepal’s forested central foothills. Communities cleared trees to start small subsistence farms, harvested the surrounding area for firewood, and eventually moved on after the wood, soil, and water were depleted.

The original version of this article, by Chris Berdnik, appeared on the Pulitzer Center on Crisis Reporting.

I meet Keo Mao, 42, in the floating fishing village of Akol on Cambodia’s Lake Tonle Sap. The houses here move seasonally with the lake, which expands by a factor of five during the monsoon rains and recedes again in the dry months. Fish supply about 80 percent of the animal protein eaten by Cambodians, and about 60 percent of the inland catch comes from the Tonle Sap.