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UK Study Reveals Air Pollution's Impact on Children's Lung DevelopmentResearch shows that air pollution is slowing the lung growth of children in the UK. Scientists tracked the lung function of more than 5,000 people who were born in and around Bristol in the 1990s. Their health was assessed from birth onwards and their lungs were tested as they grew up, at eight and 15 years old and then as adults, aged 24, when their lung function should have reached its maximum.Longitudinal Study Tracks Lung Function From Birth to AdulthoodProf Ann Hansell, of the University of Leicester, who led the study, said: "Much of the evidence on health effects of air pollution relates to adults or pregnancy, but we think it's highly plausible it has impacts on growth and development of children. Those whose lungs didn't grow to maximum potential in childhood may be more vulnerable to the respiratory diseases of later life because they have a lower reserve."Dr Katie Eminson, also of the University of Leicester and a first author of the study, explained: "Lung function was measured using spirometry by trained technicians. Participants were asked to take a deep breath in, then blow out as hard and as fast as possible into a mouthpiece. A machine measured both the amount of air they can breathe out and the speed of that breath, providing an indication of how well their lungs are working."Pollution Exposure Linked to Reduced Lung CapacityThe researchers calculated the children's air pollution exposure in each trimester of pregnancy and then for each year of early childhood. This included particle pollution as well as nitrogen dioxide, a gas that comes mainly from diesel cars and fossil gas boilers.Hansell noted: "We spent literally years creating the particulate air pollution exposure estimates in pregnancy and early life, including sourcing road traffic data from Bristol city council that are not available in the national database."The researchers allowed for other factors that can affect children's health, including premature birth, breastfeeding, parental smoking and home conditions including damp.They found that breathing more air pollution during pregnancy, infancy and early childhood can slow lung development all the way up to early adulthood. The greatest impact was during adolescence, which is the time when lung growth accelerates.Health Implications Extend Beyond Respiratory SystemThose with reduced lung function face multiple health risks. "They are also more vulnerable to poorer health generally," Hansell explained. "For instance, low lung function in adults is associated with the same level of risk of heart disease as having high cholesterol. Research has also shown that people whose lung health has been affected by air pollution may be at greater risk of heart disease."An earlier study found that air pollution was reducing the growth of children's lungs in east London. There, the average nine-year-old's lungs were between 90 and 100 millilitres smaller than they should be—approximately the volume of two hen's eggs.Studies on children in Sweden showed that lung growth increased when air quality improved. Reductions in air pollution might have also allowed the Bristol children's lung growth to return closer to normal rates.Call for Action on Air Quality ProtectionEminson concluded: "While the effects in individual children are small and unlikely to have immediate clinical consequences, they shouldn't be dismissed. Because lung function tends to track from childhood into adulthood, small differences early in life may have implications for long-term health. This reinforces the importance of reducing exposures and protecting children's environments."

The NAACP has filed a lawsuit against Elon Musk's artificial intelligence company, xAI, alleging that it has been illegally spewing toxic pollutants into Black neighborhoods near Memphis. The lawsuit claims that xAI's makeshift power plant in Southaven, Mississippi, has been operating without permits, violating the Clean Air Act.The suit, filed on Tuesday in Mississippi federal court, alleges that xAI has been polluting the surrounding historically Black communities by using dozens of methane gas generators without permits. The organization is seeking to force the company to stop operating its unpermitted turbines in Southaven.“All too often, big corporations like xAI treat our communities and families like obstacles to be pushed aside,” said Derrick Johnson, the president and CEO of the NAACP. “We will not allow xAI to get away with this.”xAI's datacenters, nicknamed “Colossus” and “Colossus II” by Musk, are massive facilities, with the latter occupying 1m sq ft in Memphis. They are located in Memphis's industrial zone and a few miles from residential neighborhoods that have long dealt with harmful pollution, including Boxtown, a neighborhood that was established by formerly enslaved people after emancipation in the 19th century.The lawsuit alleges xAI illegally installed and operated up to 27 gas turbines, each one the size of a large bus, to power the datacenters. Combined, they have the capacity to emit tons of harmful nitrogen oxides per year, along with toxic chemicals like formaldehyde, according to the Southern Environmental Law Center.xAI issued a statement in response to the lawsuit: “We take our commitment to the community and environment seriously. The temporary power generation units are operating in compliance with all applicable laws.” The company did not respond to questions about whether it will address the alleged violations listed in the lawsuit.Black residents still make up a large portion of the Memphis neighborhoods, which have faced higher rates of asthma and respiratory diseases as well as a lower life expectancy than other parts of the city. Studies have likewise shown these neighborhoods have a cancer risk that is four times the national average.