National Public Radio: Rwanda is known as "le pays des milles collines" EUR the land of a thousand hills. Weather varies by altitude; for farmers, detailed forecasts can make a huge difference.
A key step to answering questions about the weather is to consult the historic record. But what if there were no record? That's the predicament that Rwanda faces. The civil war and genocide that devastated that country in 1994 also destroyed Rwanda's system for tracking weather. The result was that for a roughly 15-year stretch,...