The problem of particulate air pollution
Small particles in the air can find their way into the brains of growing children, with seriously unpleasant consequences. Anthony King reports
As children play, walk to school and sit in classrooms, their brain development is disrupted by the unseen menace of particulate air pollution. The tiniest particles, below 2.5µm micrometres in diameter, are under most suspicion. Over 80% of the world’s population live in urban areas with levels of air pollution higher than World Health Organisation guideline. The problems can include symptoms similar to Alzheimer’s and Parkinson’s disease, autism and generally slower cognitive development. Metals and carbon particles alike are to blame, and it appears only regulation will help.