Combatting an invisible killer: New WHO air pollution guidelines recommend sharply lower limits
- Written by Laura Corlin, Assistant Professor of Public Health and Community Medicine, Tufts University
New Delhi has had days with air pollution levels nearly 30 times the old World Health Organization guidelines.Sajjad Hussain/AFP via Getty ImagesAir pollution is the world’s fourth leading cause of death, contributing to about 13 premature deaths every minute. The gases and tiny particles can travel deep into your lungs, enter your...

