New York City subway riders are breathing in hazardous air, study finds

Study shows average platform has four times the level of pollution exposure deemed safe by EPA

New York City subway riders are breathing in hazardous air, with Black and Hispanic commuters exposed to higher levels of pollution, a new study shows.

New York University researchers found that the average subway platform had four times the particulate pollution (PM2.5) exposure standard deemed safe over a 24-hour period by the Environmental Protection Agency, and nine times the exposure guideline set by the World Health Organization.