For two villages in southern Malawi, climate change and contraception have become intertwined. So much so, that long-held cultural assumptions are starting to change.

Hans Rosling has always been an innovator when it comes to bringing big ideas to big audiences. The Norwegian doctor, statistician, and co-founder of the Gapminder Foundation has become known – to the kind of people who watch TED Talks anyway – for lively presentations aimed at demystifying common ideas about global development and demography. On Gapminder.org, he literally stands chest-high in water appealing for your donation to help him “cross the river of myths.”

With intense drought in Sao Paulo and California, devastating floods in Malawi, and escalating water-energy confrontations in many developing countries, it is no wonder water is making headlines. It’s also gained the attention of the World Economic Forum (WEF), which lists water crises as the world’s number one risk in its recently released Global Risk Assessment.

“Political demography is a discipline whose time has come,” said Rob Odell of the National Intelligence Council at a gathering of demographers and researchers in New Orleans. “You can sense this inherent dissatisfaction” with a lot of analytical and predictive tools in international relations, he said, and “political demography provides policymakers a way to think about long-term trends.”

The Sahel – spreading from the Red Sea to the Atlantic as the Sahara Desert transitions to Sudanian savanna – is drought prone and suffers from chronic food insecurity. Yet, the region also boasts the highest fertility rates in the world, and the highest rates of marriage for young girls. This creates unique vulnerabilities that are being compounded by climate change, says ECSP’s Roger-Mark De Souza in an episode of Wilson Center NOW.

You could say the people living along the banks of the Thondwe River in southern Malawi were lucky. At least they’d been warned of the flash flood in early January that would burst through an earthen dike, wash away their homes and crops, and leave more than 4,000 of them homeless.

India is one of the most water-challenged countries in the world, from its deepest aquifers to its largest rivers. Groundwater levels are falling as farmers, new urban residents, and industries drain wells and aquifers. What water is available is often severely polluted, and the future may only be worse, with the national supply predicted to fall 50 percent below demand by 2030.

In 2009, the U.S. Congress passed a five-year, $7.5 billion aid package for a country it had all but abandoned just 10 years earlier. Indeed, if one word can summarize the U.S. relationship with Pakistan, “volatile” might be it. Since the September 11 attacks, the U.S. has appropriated nearly $61 billion in aid to Pakistan – more than twice what it received since independence in 1947.