Air pollution inside Philly’s subway is much worse than on the streets
We are an environmental scientist and a biochemist who assessed the air quality at the 15th Street-City Hall station in ...
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Air pollution inside Philadelphia's subway is much worse than on the streets, study finds
We are an environmental scientist and a biochemist who assessed the air quality at the 15th Street-City Hall station in Philadelphia ... we measured on the busy Market-Frankford or Broad Street ...