This graphic compares water accessibility in countries across Sub-Saharan Africa, showing the gap between its rural and urban populations.
The Western U.S. is no stranger to droughts. But this year's is one of the worst yet. Here's a historical look at U.S. droughts since 1999.
Of 167 countries examined in a report by the World Resources Institute, there are 33 that expect to have extremely high water stress by 2040.
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