Hanoi becomes world's most polluted city with PM2.5 levels 15 times above WHO guidelines.

Hanoi, Vietnam's capital, was recently named the world's most polluted city, with PM2.5 levels 15 times higher than WHO recommendations. The smog, affecting nine million residents, is due to construction, vehicle emissions, and industrial activities. Air quality could improve with the arrival of the monsoon season in March. Authorities are considering increasing electric vehicle usage to combat pollution.

3 months ago
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