A study shows people riding the New York City subway system are exposed to toxic air and lower income residents have higher exposure.
A study by NYU found air pollution known as Fine Particle Matter is significantly higher in the subway system than 24 hour exposure guidelines set by the World Health Organization. Masoud Ghandehari is the author of the study.
"When a train comes by, the concentrations shoot up in the air. In other words, the train is churning up all the stuff that is deposited over years in the bottom of the tracks."
He says Black and Hispanic low income riders have increased exposure because they typically have longer commutes. The MTA released a statement saying "This recycled study based on years-old data has long since been debunked."