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.

Begusarai, a city of half a million people in northern India’s Bihar state, was the world’s most polluted city last year with an average annual PM2.5 concentration of 118.9 — 23 times the ...

Annual average PM2.5 concentrations in the world’s most polluted cities range from 86 micrograms per cubic meter in Zhengzhou, China to 149 micrograms in Patna, India.

Begusarai, a city of half a million people in northern India’s Bihar state, was the world’s most polluted city last year with an average annual PM2.5 concentration of 118.9 — 23 times the ...

After India, Pakistan has the most number of cities among the most polluted cities in the world, and we start off with Sahiwal, located in the province of Punjab. There are close to 400,000 people ...

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 ...

And the world’s most polluted city is … Simon Busch, CNN 4 minute read Updated 4:00 AM EST, Fri January 31, 2014 Link Copied! New Delhi ... READ: World’s 10 most loved cities .

Delhi now outranks Beijing as the world's most polluted city. Carbon dioxide, ozone and fine carbon particles get trapped over India's capital, mostly due to dirty fuels, causing long-term health ...

To identify the most polluted cities in the world, 24/7 Wall St. ranked nearly 3,000 cities worldwide based on the annual average concentration of PM2.5 per square meter of air.

All 20 of the world’s most polluted cities last year exceeded WHO PM2.5 guidelines by over 10 times, the IQ Air report showed. Data gaps ...

Begusarai, a city of half a million people in northern India’s Bihar state, was the world’s most polluted city last year with an average annual PM2.5 concentration of 118.9 — 23 times the ...