It was a scorching hot April afternoon in Keur Moussa, a small farming community about 60 kilometers outside Dakar, Senegal. The landscape was mostly barren and very dry, and a fine red dust settled into our clothes as we walked with community leaders to learn about their efforts to cope with a changing environment. In this part of the world, adapting to climate change is figuring out how to manage water: how to survive for long periods without it, and what to do when too much comes at unexpected times.

In a recent post on the new United Nations population projections, I discussed the risk in assuming that countries in sub-Saharan Africa will progress through the demographic transition at a pace similar to other regions. Making this assumption is questionable because fertility decline in Africa has generally proceeded more slowly than in other parts of the world, with several cases of “stalls” and even small fertility increases over time.

Cambodia to grow by nearly one-third by 2050; Kenya to more than double; Mali to swell to three times its current size. These were the population projections available when Feed the Future, President Obama’s global hunger and food security initiative, was beginning implementation in 19 focus countries around the globe in 2010.

A woman sat crouched on the side of a busy road in Dakar, a baby in a sling on her back and a basket of peanuts in front. I know only a little French, and no Wolof, but I decided to try anyway. “Bonsoir,” I said, and smiled at the toddler beside her. “Combien?” I asked, pointing at the peanuts.

She smiled back at me, we negotiated a sale, and in exchange for the coins in my pocket I walked away with a few bags of the small, tasty nuts that are grown throughout the “peanut basin” of central Senegal.

The 2011-12 West African food crisis led to riots in Senegal and Burkina Faso as well as food insecurity for millions of rural and urban poor across the region. The crisis emerged from a number of factors, including instability in northern Mali, increases in global food prices, and low rainfall in the 2010-2011 and 2011-2012 growing seasons. Many countries in the region are now reassessing and expanding domestic agricultural capabilities. At the top of the agenda for Senegal, a democratic republic on track to reach many Millennium Development Goals, is reducing youth unemployment and increasing domestic agricultural capacity.

“It’s always important when working in policy to consider what we can do beyond conception and look at more implementation,” said Valerie Stahl of New York University at the Wilson Center last month.

Stahl was one of three graduate students presenting their winning papers for an annual academic paper competition, “Reducing Urban Poverty,” co-sponsored by the Wilson Center, USAID, International Housing Coalition, Cities Alliance, and the World Bank. This year’s competition was the third in an effort to better link new academic work on urban issues to actual policymaking. [Video Below]

The original version of this article, by Jill Hagey, appeared on the Population Reference Bureau’s Behind the Numbers blog.

Over the past few months, the Sahel drought has sparked attention of news media and concerned citizens around the world. Throughout this media blitz, I have been struck by the sharp contrast between this coverage and how the devastating effects of malnutrition are usually portrayed. Malnutrition is often overlooked in favor of more “newsworthy” diseases, and it takes a crisis to focus our attention on this public health issue. Yet an emergency such as this drought – affecting more than 18 million people, including nearly 2 million children – is difficult to ignore.

The number of urban slum dwellers worldwide is staggering. According to UN-Habitat, 827.6 million people live in slums around the world. Despite meeting a Millennium Development Goal to significantly improve the lives of at least 100 million slum dwellers by 2020, the total number of people living in these areas still increased by 55 million between 2000 and 2010. By 2020, the world slum population is projected to reach 889 million. With the majority of people now living in cities, urban priorities are synonymous with human security and environmental sustainability and must be accounted for in the global development agenda.