Underground train commuters face alarming levels of particulate matter pollution daily. The Victoria Line shows median PM2.5 concentrations of 361 μg/m³, with peaks exceeding 800 μg/m³ between Pimlico and Brixton. The WHO’s 2021 air quality guidelines recommend annual PM2.5 exposure should not exceed 5 μg/m³, making these underground levels 70 times higher than safe limits. Mia Patterson Cox, a recent Industrial Design and Technology graduate from Loughborough University, witnessed this problem firsthand during her placement year in London. “I often thought about the hot stuffy environment and would be concerned when I found dust around my nostrils after travelling on … Continue reading Student Builds Neck Purifier After Tube PM2.5 Hits 70x WHO Safety Limits