In a live ranking Saturday by IQAir, a Swiss air monitoring company, Hanoi ranked 13th on a list of the most polluted major cities. The fog hanging over Hanoi isn’t just pollution; it’s a ...

HANOI >> Vietnam’s capital Hanoi has been covered in thick smog over recent weeks, putting it at the top of a list of the world’s most polluted cities, as the government said it would push for ...