Pollution
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Britain wants cycle-friendly cities. Here’s how we get themForget common sense: getting the go-ahead on new schemes is all about politics, writes Andrew Gilligan, former cycling commissioner for London
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Delhi's smog-fighting helicopters can't fly – because of smogCity administrators told they would be unable to help dissipate the smog until the smog itself cleared
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Pollution problem is just being pushed aroundLetters: London’s proposed ultra-low emissions zone will do nothing to address the capital’s problem with polluting vehicles, writes Felix Leach
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'I feel helpless': Delhi residents on the smog crisisSmog, respirator masks and ‘business as usual: our readers share their experiences of Delhi’s public health emergency
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One in three cars in VW emissions scandal yet to be fixed, figures showMonthly rate of fixes of vehicles with defeat devices has fallen to 2% from a previous high of 10% earlier in the year
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Oxford Street could become 'traffic-free boulevard' next yearRadical proposal to pedestrianise area west of Oxford Circus is aimed at improving air quality and tackling congestion
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Dramatic rise in plastic seabed litter around UKAverage of 358 items per square kilometre found in 2016, of which more than three-quarters were plastic
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Climate change already bringing disease, air pollution and heatwavesHeatwaves, pollution and disease are the main health issues linked to global warming but action to halt emissions would deliver huge benefits
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'Maybe the smog can bring us together': toxic air chokes Pakistan and India