In Hanoi, the earth’s most polluted city, the air is concrete
June 29, 2025, 5:15 AM EDT HANOI, Vietnam — Hanoi has no horizon. Blocky apartment towers dissolve into gray fog in the Vietnamese capital, as barges carrying sand inch down the Red River toward makeshift jetties. At street level, the city blurs as if it’s covered in film. The air…
bubmagJune 29, 2025