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Is Delhi's air causing lung cancer? Video, 00:01:39Is Delhi's air causing lung cancer?

Madrid bans old cars to cut pollution

Is China behind global coal power surge?

A city that is turning streets into gardens. Video, 00:02:59A city that is turning streets into gardens

Health Check. The Health Impact of Smoke from Californian Wildfires. Audio, 27 minutesHealth Check

Plan to pedestrianise centre of Paris

London pollution 'stunts lung capacity'

Things Indians do to beat pollution

Toxic smog returns to Delhi after Diwali

Choking Delhi smog draws protests. Video, 00:00:57Choking Delhi smog draws protests

Delhi panic over toxic air ahead of Diwali

Air pollution 'never measured' in hotspot

Russian glitch voids 5m traffic tickets

Air pollution early deaths rise in EU

City roads could shut during school run

How a food crisis led to Delhi’s foul smog

France proposes traffic toll in cities

Bryan Adams photo shows Delhi gig pollution

The Inquiry. Can Delhi Clean Up Its Air? Audio, 23 minutesThe Inquiry

Bus firm counts cost of low emission zone

The city with the world's worst traffic. World Business Report. Audio, 00:05:19The city with the world's worst traffic

M4 junction closure 'can't be ruled out'

UK's first air-cleaning bus launched