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. 2009 Apr 17;117(7):1023–1032. doi: 10.1289/ehp.0800423

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A drainage canal constructed by local community efforts in Zaria City, Nigeria, a malaria region. Dr. Samaila U. Dakyes, of the Department of Industrial Design, Ahmadu Bello University–Zaria, is a local chief who has organized people in his community to maintain sewers and waste control. Such efforts can improve conditions, but the stagnant water shown in the photo indicates the need for additional work and infrastructure. Photo by S. Batterman.