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Millions of people in Africa are facing a shortage of clean water. Lack of clean water increases the risk of diarrheal diseases, such as cholera, typhoid fever and dysentery, and other water-borne tropical diseases. Good cooker is a ring-shaped stove made of clay. Untreated water is poured into the cavity of the stove, and the water is heated and disinfected during the cooking process.
Ningbo City, China