{"id":51907,"date":"2026-08-23T10:42:23","date_gmt":"2026-08-23T10:42:23","guid":{"rendered":"https:\/\/naijaglobalnews.org\/?p=51907"},"modified":"2026-08-23T10:42:23","modified_gmt":"2026-08-23T10:42:23","slug":"londons-low-emission-zone-is-working-so-why-are-cities-around-the-world-so-cautious-about-clean-air-low-emission-zones","status":"publish","type":"post","link":"https:\/\/naijaglobalnews.org\/?p=51907","title":{"rendered":"London\u2019s low emission zone is working \u2013 so why are cities around the world so cautious about clean air? | Low emission zones"},"content":{"rendered":"<p>\n<\/p>\n<p class=\"dcr-1s160rg\"><span style=\"color:var(--drop-cap);font-weight:500\" class=\"dcr-1iwzucl\">T<\/span>en years ago, Alastair Harper was an advocate for young people\u2019s health sitting in a stuffy meeting room in London planning an air pollution campaign. \u201cMy phone started buzzing,\u201d he said. \u201cI took the call, and then told the room I needed to leave immediately.<\/p>\n<p class=\"dcr-1s160rg\">\u201cI had to get to UCLH [one of London\u2019s major hospitals]. My own child was headed there in a blue-lit ambulance because she was struggling to breathe London\u2019s toxic air.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Hundreds of thousands of parents across the UK capital had similar experiences in those years. Between about 6,000 and 8,000 people were dying prematurely each year in London in the late 2010s. In 2020, an inquest found that the death of Ella Adoo-Kissi-Debrah in 2013 had been a direct result of air pollution, the first time it had been listed as a cause of death in the UK.<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">Commuters cross London Bridge on a smoggy morning in 2012. <\/span> Photograph: Barry Lewis\/Corbis\/Getty Images<\/p>\n<p class=\"dcr-1s160rg\">This week, a study from Queen Mary University London (QMUL) showed a significant reversal. Children\u2019s lungs had grown bigger and stronger since the most polluting vehicles have been restricted on the capital\u2019s roads, scientists found. The ultra-low emission zone (Ulez) \u2013 introduced by London\u2019s mayor Sadiq Khan in 2019 and expanded in 2021 and 2023 \u2013 charges \u00a312.50 a day for more polluting vehicles that do not meet stringent standards. It has drastically cut levels of nitrogen dioxide, a harmful pollutant.<\/p>\n<p class=\"dcr-1s160rg\">To Harper, who later worked for Khan as an environmental adviser, and now works independently, relief at his own child\u2019s recovery has been supplemented by the satisfaction of knowing that far fewer parents will experience such dread. \u201cTo know now that same air is so much safer for the kids that breathe it because of the political choice of one man makes me feel proud of this city,\u201d he said.<\/p>\n<p class=\"dcr-1s160rg\">Nick Hopkinson, a professor of respiratory medicine at Imperial College London, said the QMUL study was not a surprise. \u201cThere is an absolute wealth of evidence that air pollution is a major cause of ill health and premature death across the planet,\u201d he said. Air pollution kills 7 million people a year globally, according to the World Health Organization.<\/p>\n<p class=\"dcr-1s160rg\">Poor air not only causes respiratory difficulties and the stunting of children\u2019s lungs, but also heart disease and stroke. It is associated with some forms of cancer, dementia, autism and cognitive difficulties in children too. New studies are adding to our knowledge, but we have known for decades of the basic dangers of dirty air. So why is there so much opposition to curbs on air pollution, which are clearly sound public health measures?<\/p>\n<p class=\"dcr-1s160rg\">This opposition, culture war even, is central for all cities hoping to follow Khan\u2019s lead. The leading causes of air pollution vary around the world \u2013 coal use in power stations in China and India, agricultural burning in south-east Asia, waste burning in many of the poorest countries and dust and local industry in others \u2013 but road traffic is a constant.<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">The Reform UK leader, Nigel Farage, speaks to the driver of a van taking part in a protest against London\u2019s Ulez. <\/span> Photograph: Leon Neal\/Getty Images<\/p>\n<p class=\"dcr-1s160rg\">The technology to cut all of these types of air pollution already exists, says a former social development minister of Ecuador and now executive director of the Breathe Cities initiative, whose supporters include the Clean Air Fund and C40, a global coalition of mayors and leaders of nearly 100 major cities. \u201cWe know that we have the means to make a difference, and we are sharing knowledge and success stories so they can be replicated with impactful policies,\u201d she said.<\/p>\n<p class=\"dcr-1s160rg\">In the case of coal, the alternatives are renewable energy. Halting the burning of forests and peatlands would also combat the climate crisis. The alternatives to polluting traffic are public transport, electric vehicles, the redesign of cities and encouragement of active transport \u2013 walking and cycling. Trees are also important everywhere.<\/p>\n<p class=\"dcr-1s160rg\">Paris and Barcelona have shown what is possible within a few years when mayors embrace the joys of cycling, following the lead long ago taken in Denmark and the Netherlands. New York\u2019s Zohran Mamdani, now wearing a cycle helmet, hopes to do the same. But elsewhere in car-dominated America, infamously poor public transport provision, an intractable SUV culture and a president in Donald Trump intent on rolling back environmental protections mean widespread change is unlikely.<\/p>\n<p class=\"dcr-1s160rg\">Other cities are working to make a difference. Bogot\u00e1 is about to embark on its second Zuma, a clean air zone that involves expanding cycle lanes and footpaths, paving roads to suppress dust and planting trees. The Colombian capital won last year\u2019s global Earthshot prize for its first Zuma. The city\u2019s environment secretary, Adriana Soto, said: \u201cResidents helped shape the design, particularly how the works would maintain access to their homes and respond to local mobility needs.\u201d Hundreds of cities around the world now have clean air zones of varying sizes.<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">Rush-hour traffic in the Kenyan capital, Nairobi, in July.<\/span> Photograph: Tony Karumba\/AFP\/Getty Images<\/p>\n<p class=\"dcr-1s160rg\">Another is Kenya\u2019s capital, Nairobi, which passed an air quality act in 2022 that requires harmful emissions to be halved by 2035 and has installed a network of 50 low-cost monitoring stations as a first step. Imports of vehicles more than eight years old are banned, and the city is consulting on establishing clean air zones. The lead for the C40 Breathe Cities project in Nairobi, Victor Indasi, said: \u201cMore remains to be done, but Nairobi is firmly on the right trajectory.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Bulgaria\u2019s capital, Sofia, is saddled with old-fashioned heating systems dependent on coal and wood burning. These are being phased out and replaced with cleaner heat pumps, subsidised for those on low incomes, as part of a city-wide introduction \u2013 the first in south-east Europe \u2013 of low-emissions zones for transport and heating. Recent results show a 22% reduction in the average concentration of PM10 particulate matter, and a halving of days that exceed air quality guidance levels. Poland is also cutting its reliance on solid fuels.<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">A tram runs along a boulevard in Sofia.<\/span> Photograph: Hristo Rusev\/Getty Images<\/p>\n<p class=\"dcr-1s160rg\">In Australia, Melbourne\u2019s mayor was inspired by a speech Khan gave last year before Brazil\u2019s Cop30 climate summit. The first step was discovering that state-level monitoring was telling the city little about the real quality of its air at a neighbourhood level. \u201cIt was surprising to us that this wasn\u2019t being measured,\u201d a spokesperson said. With the new monitoring data coming in, the mayor has yet to decide what actions will be taken, whether a clean air zone or other restrictions, or carrots in the form of scrappage schemes and improved public transport. \u201cWe are still at the beginning of this journey,\u201d the spokesperson said.<\/p>\n<p class=\"dcr-1s160rg\">London\u2019s low emission zone might not have happened if Khan had not staked his reputation on it. When he launched the scheme in 2019, he faced fierce opposition from political opponents and large groups of voters, and even his own party. The plan was challenged in the courts, businesses complained of the supposedly crippling costs, and Khan received personal threats and shouts of \u201cNazi\u201d at public appearances. One survey found 60% of Londoners who replied to a consultation were against it.<\/p>\n<p>skip past newsletter promotion<\/p>\n<p class=\"dcr-vf9hps\">Sign up to <span>Down to Earth<\/span><\/p>\n<p class=\"dcr-1r7my33\">The planet&#8217;s most important stories. Get all the week&#8217;s environment news &#8211; the good, the bad and the essential<\/p>\n<p id=\"EmailSignup-skip-link-20\" tabindex=\"0\" aria-label=\"after newsletter promotion\" role=\"note\" class=\"dcr-76akua\">after newsletter promotion<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">People protest outside Downing Street after the low emission zone was expanded in 2023.<\/span> Photograph: Anadolu Agency\/Getty Images<\/p>\n<p class=\"dcr-1s160rg\">In 2023, the resurgent Labour party under its new leader Keir Starmer faced an important byelection in Uxbridge, on the outer edge of London. The Ulez was a key issue for voters and Labour lost by a small margin, leading Starmer\u2019s advisers to blame the zone and demand row-backs in London and elsewhere. Andy Burnham, then the mayor of Greater Manchester, who took over from Starmer as prime minister this autumn, abandoned plans for a Ulez after Uxbridge.<\/p>\n<p class=\"dcr-1s160rg\">In all of these cities there is a sense of caution, even hesitancy, and none are moving fast enough. In London, the successes of the Ulez are threatened by the ballooning number of wood-burning stoves, a fashion accessory rather than a necessity for most of their urban owners. These are now a bigger source of particle pollution than traffic. More than 110,000 children were admitted to hospital with breathing difficulties in London in 2024.<\/p>\n<p class=\"dcr-1s160rg\">Monitoring is a vital first step, but what is done with the data is what counts. That will involve tough measures. \u201cThere is always a price. You have to change people\u2019s behaviour, you have to change the transport, the heating, the energy generation,\u201d said Hopkinson. \u201cThe way things are in cities is the way they have developed over long periods, and changing all that is difficult.\u201d<\/p>\n<p class=\"dcr-1s160rg\">The pollution is often invisible. As Vaca Jones put it: \u201cAir is not a tangible public good that people can feel and see. That means it is not a priority on the political agenda.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Vested interests also intervene. Though studies show that air pollution takes an economic as well as a physical toll, businesses often complain \u2013 with little evidence \u2013 that curbs on driving will hurt them.<\/p>\n<p class=\"dcr-1s160rg\">There is also the fact that the people driving the cars and operating the polluting factories are often not the same people whose children are being admitted to hospital. \u201cThose who are suffering are those who have done least to cause the pollution,\u201d said Chris Griffiths, a professor of primary care at Oxford University.<\/p>\n<p class=\"dcr-1s160rg\">When Khan embarked on London\u2019s Ulez, hysterical misinformation quickly spread online, suggesting the mayor intended to shut down London for his own ends. His deputy, Mete Coban, recalls the shock. \u201cThe personal abuse Sadiq got on the back of it was incredible,\u201d he said. \u201cI think it\u2019s this, the misinformation, that is the number one thing that puts off other countries from doing this.\u201d<\/p>\n<p><span class=\"dcr-vyhg7z\"><\/span><span class=\"dcr-1cipnsy\">People protest against the expansion of London\u2019s low emission zone in 2023.<\/span> Photograph: Guy Bell\/Shutterstock<\/p>\n<p class=\"dcr-1s160rg\">Hopkinson said: \u201cThere is a kind of madness about it. \u201cDisinformation, which is lying to people, is confusing them. They are trying to persuade people that air pollution is not bad for them, and climate change is not real.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThey are spreading wild conspiracy theories [for instance that 15-minute cities, where all amenities can be accessed within a small area, are devices of government control] and the far right are exploiting this and generating grievance.\u201d<\/p>\n<p class=\"dcr-1s160rg\">With the latest study adding to a growing pool of evidence of the Ulez\u2019s success, proponents of cleaner urban air hope to be able to cut through the madness with facts that speak loudly to parents and responsible people everywhere.<\/p>\n<p class=\"dcr-1s160rg\">As Hopkinson put it: \u201cThe question for pro-pollution campaigners is \u2018why do you hate children?\u2019\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ten years ago, Alastair Harper was an advocate for young people\u2019s health sitting in a stuffy meeting room in London planning an air pollution campaign. \u201cMy phone started buzzing,\u201d he said. \u201cI took the call, and then told the room I needed to leave immediately. \u201cI had to get to UCLH [one of London\u2019s major<\/p>\n","protected":false},"author":1,"featured_media":51908,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[361,5283,1979,1289,664,3068,5215,550,1088,8444],"class_list":{"0":"post-51907","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-health","8":"tag-air","9":"tag-cautious","10":"tag-cities","11":"tag-clean","12":"tag-emission","13":"tag-londons","14":"tag-working","15":"tag-world","16":"tag-zone","17":"tag-zones"},"_links":{"self":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts\/51907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=51907"}],"version-history":[{"count":0,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts\/51907\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/media\/51908"}],"wp:attachment":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=51907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=51907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=51907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}