Lahore again tops the list of the world's most polluted cities

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Lahore is still one of the most polluted cities

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Lahore tops the list of world's most polluted cities. Karachi follows

Air Quality Index: Lahore rank first among the world's most polluted cities

World Air Quality Report: Delhi Most Polluted Capital, 63 Indian Cities In Global List Of Most Polluted Places

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Three Indian cities, including Delhi among world’s 10 most polluted ci

Delhi Is World's Most Polluted Capital, 21 Other Indian Cities On List: Report

World\'s Most Polluted Cities: जगातील सर्वात प्रदूषित शहरांची नावे जाहीर, यादीत 15 शहरे भारतातील