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]

Half the world’s pigs – 476 million – reside in China. Increasingly prosperous consumers are eating fewer grains and demanding a more protein-rich diet, ballooning the pork industry to 15 times its 1960s-era size. In the last 30 years, Chinese demand for meat has quadrupled and China is now the largest consumer of seafood in the world.

Water and women were common themes among the blog’s most popular posts last month.

On the aquatic front, USAID launched a new water and conflict toolkit, guest contributor Cameron Harrington took on the concept of impending “water wars,” and Keith Schneider introduced the “Choke Point: India” project.

Outside of donor and humanitarian aid, South Sudan’s economy is almost entirely dependent on the oil sector – and that sector is in crisis.

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.

“Saving the planet depends on women achieving full human rights, and that begins with reproductive rights,” writes the Natural Resources Defense Council’s Frances Beinecke in a new set of essays on reproductive health published by the United Nations Foundation and the Aspen Institute.