South Korea, Floods
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In some South Korean cities, the roads clean themselves using smart sprinklers. This repurposed rain water is also used to keep the roads cool in hot weather.
Two people died and more than 1,000 have been evacuated in South Korea after the country was lashed by torrential rain on Thursday, the safety ministry said. As of 11 a.m. (0200 GMT), some parts of the South Chungcheong region to the south of the capital Seoul had seen more than 400 millimetres (15.