Here are vintage photos ... The city’s North Birmingham area was the most heavily polluted, and smog filled the air, impacting the health of its residents. Cleveland, 1973: Smoke and Trash ...

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MILLIONS are choking on toxic air and struggling to breathe in the world's most polluted city, with the streets enveloped in thick smog. Vietnam's capital, Hanoi, is being suffocated by hazardous ...

However, it’s also one of the most polluted cities in the world, with smog and burning rubbish making the air quality one of the worst globally. Air pollution is measured by the level of PM2.5 ...

An urban train passes over an elevated track amid heavy air pollution conditions in Hanoi (Picture ... air pollution in its major cities for years. The thick smog in Hanoi is mostly caused ...

Air pollution in the Thai capital has forced the closure of more than 350 schools, city authorities said, as Bangkok was ...

However, experts agree the city's chronic pollution problems are also at fault. Mexico City is prone to air pollution, both because of the mountains that surround it - trapping smog overhead - and ...

The region of Sarajevo on Wednesday declared a state of alert, as the Bosnian capital once again ranked among the world's most polluted ... at the city wrapped in a thick cloud of smog.

Vietnam’s capital Hanoi has been covered in thick smog over recent weeks, putting it at the top of a list of the world’s most polluted cities, as the government said it would push for more ...