Pollution
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Tiny plastic pellets found on 73% of UK beachesGreat Winter Nurdle Hunt finds thousands of pellets used in plastic production washed up on shorelines around country
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European commission issues 'final warning' to UK over air pollution breachesUK is one of five countries persistently contravening legal nitrogen dioxide levels with pollution from factories and vehicles
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10 ways to beat air pollution: how effective are they?From particle-zapping bus stops to compact ‘smart’ air filters, we examine the methods that tackle the symptoms of air pollution
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'Filthy glamour': could polluted Marylebone Road help fix London's air?Marylebone Road has the odd distinction of being the world’s most studied road in terms of air pollution – yet remains a chief culprit in London’s ‘shameful’ air quality. Now it’s home to a series of new experiments
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Delhi's deadly dust: how construction sites are choking the cityThe Indian capital’s inherently dusty air is made worse by countless unregulated construction sites – and the production of bricks and concrete to feed them
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Breathless in Bakersfield: is the worst air pollution in the US about to get worse?In California’s Central Valley emissions from oil refineries and agriculture make Bakersfield America’s most air-polluted city. Activists fear the Trump administration could undo small but steady improvements
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Zenica, Bosnia: the steel town where even taking a breath can be a struggleAsh clouds dominate the sky in Zenica, with many blaming the air pollution on ArcellorMittal, the world’s largest steel maker and a major employer here
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Air pollution masks – fashion's next statement?Face masks are already a common sight in Asia. Now, as air pollution worsens, designers are targeting city dwellers in Europe and the US with pricier products
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65% of British public support new Clean Air Act, says surveyExclusive: Research also found 58% believe current levels of air pollution in UK are harmful or very harmful to health
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'Extraordinary' levels of pollutants found in 10km deep Mariana trenchPresence of manmade chemicals in most remote place on planet shows nowhere is safe from human impact, say scientists
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One day in the life of a suffocating planet – as it happenedAs Guardian Cities kicks off a week investigating air pollution, our correspondents report from the front lines of this global urban crisis
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'We had to sue': the five lawyers taking on China's authorities over smogIn an unprecedented legal case, a group of Chinese lawyers have charged the governments of Beijing, Tianjin and Hebei with failing to protect their citizens from air pollution, which is linked to a third of all deaths in the country
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Pant by numbers: the cities with the most dangerous air – listedWe’ve broken down the data on dangerous PM2.5 particles, and listed them region by region – to reveal the cities with the worst air in Europe, the US, Africa, Asia and more
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When smog hits the headlinesWeatherwatch January’s smog broke recent records, but while glib comparisons with Beijing can result in action, they are also misleading
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Australia's heatwave continues with record temperatures forecastNSW and Queensland brace for hottest February day on record, putting paramedics on high alert
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Data linking death with air pollution inconclusive, says Indian ministerEnvironment minister Anil Madhav Dave overlooks Greenpeace research stating 1.2m Indians die each year from airborne pollutants
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Microbead ban should include all products washed down the drain, say campaignersA proposed government ban on the tiny plastic beads that pollute the ocean should be extended to include items such as make-up, sunscreen and cleaning products
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Europe escalates action against UK for breaching air pollution limitsUK fails to apply environmental law on air quality, water standards, and the conservation of several species, EU review reveals
The air we breathe Hope for Hanoi? New bus system could cut pollution … if enough people use it