ClimateWire: The mention of diarrhea is likely to elicit a vague squeamishness in the First World, where indoor toilets and clean water for washing are commonplace, but for thousands of children living in drought-plagued sub-Saharan Africa, the subject is one of life and death.
Although the illness is both easily preventable and treatable, World Health Organization data show that close to 920,000 people in the U.N. agency's Africa region died of diarrheal diseases in 2008. Nearly three-quarters of these deaths...