In Bangladesh, one of the world’s most polluted cities has led the way globally in ridding itself of harmful PM10 particles

Once, Rajshahi’s sweltering summers were made worse by a familiar problem on the Asian subcontinent: windows would have to be shut, not because of the wind or monsoon, but because of the smog.

Dust blown up from dry riverbeds, fields and roads, and choking smog from ranks of brick kilns on the edge of town helped to secure the place a spot in the top tier of the world’s most polluted cities.

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Source: Guardian Environment