World Health Organization, WHO has released a database on the most polluted cities in the world. And according to the recently released report, Onitsha city, in Anambra state Nigeria is ranked as the most polluted city in the
world followed by Peshawar in Pakistan, Zabol in Iran, Rawalpindi in Pakistan and Kaduna in Nigeria, all making the top 5 cities respectively. Boshehr city in Iran is ranked 20th.
Really
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