Pollution in the Vietnamese capital of Hanoi, home to almost 9 million people, reflects the environmental cost of the Southeast Asian nation’s explosive growth.

This major city was ranked the 2nd most polluted city by IQAir on Monday due to wildfire smoke from the Prairies. Michael ...

All but one of the world’s top 20 most polluted cities last year were in Asia, a new study shows. The majority of these cities – 13 – are in the world’s most populous country, India, where ...

All but one of the world’s top 20 most polluted cities last year were in Asia, with the majority of these cities – 13 – in India, the world’s most populous country.

Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a new report shows.

Delhi, which ranked as India's second most polluted city with PM2.5 levels averaging 87 micrograms per cubic metre in the ...

(CNN) — All but one of the world’s top 20 most polluted cities last year were in Asia, a new study shows. The majority of these cities – 13 – are in the world’s most populous country ...