Photos by Mohammadreza Dehdari, Mehr News Agency
Another severe dust storm has hit the city of Ahvaz in the province of Khouzestan in southwestern Iran. In recent years, dust storms originating from Iraq have become a common thing for the western cities in Iran. The storms have resulted in closing of offices and schools at times, and they are a major source of health concerns for the residents.
According to a study published by the World Health Organization in September 2011, Ahvaz is the world's most polluted city. WHO says Ahvaz has the highest measured level of airborne particles small enough to cause serious health problems in humans. Ahvaz is a heavily-industrialized city known for oil fields.
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