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Art installation recreates city smog. Video, 00:01:40Art installation recreates city smog

The fight against air pollution in three global cities

India air pollution at 'unbearable levels'

Delhi choked by dangerous smog. Video, 00:00:26Delhi choked by dangerous smog

Millions of masks given out in 'gas chamber' Delhi

Bristol could be UK's first city with diesel ban

London car scrappage scheme to be extended

'Tax on work' a price worth paying for clean air?

Pollution 'triggers hundreds more heart attacks'

What's in the government's new environment bill?

Witness History. Mexico City slashes car use. Audio, 9 minutesWitness History

Pupils target motorists who leave engines idling. Video, 00:01:12Pupils target motorists who leave engines idling

How do you breathe less pollution on school run? Video, 00:01:43How do you breathe less pollution on school run?

Speed limits cut pollution at traffic hotspots

Thunberg to leaders: 'You've failed us on climate'

'This is not Mars': Sky in Indonesia turns red

'I'm worried about my baby's health' Video, 00:02:20'I'm worried about my baby's health'

Climate protests in cities across the world. Video, 00:02:25Climate protests in cities across the world

Cut air pollution to fight climate change - UN

´óÏó´«Ã½ Inside Science. MOSAiC Arctic super-expedition, Likely extinction of the Bahama nuthatch, Tim Smedley's book on air pollution. Audio, 31 minutes´óÏó´«Ã½ Inside Science

What it's like breathing in Asia's hazardous haze. Video, 00:03:04What it's like breathing in Asia's hazardous haze

Air plan 'falls apart' without government funding

Estate agents urged to tell buyers about pollution