The London Underground has high levels of a type of air pollution linked to health problems including heart disease, strokes and lung cancer, according to a new study.
Research carried out on various parts of the network found that concentrations of fine particles (PM2.5) were 15 times higher than above ground, plus greater than those found in the subway networks of Beijing, Guangzhou, Los Angeles, Mexico, New York, Seoul, Taipei, Sydney and Barcelona.
Published in the journal Environment International, the study was undertaken by researchers from King’s College London and is the first comprehensive paper on PM2.5 levels on the London Underground.
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