The Washington Post: Study finds subway air is heavily contaminated with hazardous pollutants.
The study, funded by a National Institute of Environmental Health Sciences grant and published in the Environmental Health Perspectives journal on Wednesday, reviewed underground air at the largest transit systems in the Northeast, located in New York-New Jersey, D.C., Philadelphia and Boston. Each system showed concentrations of hazardous metals and organic toxins that ranged between two and seven times the amount in outdoor fresh air.