Subway Steel Dust: A Gaping Hole In Public Health Research.


Is what we know now good enough?

Almost ten years ago, 21-year-old Columbia University undergraduate David Epstein stood at the gaping entrance to the West 116th Street subway station in uptown Manhattan, a large backpack slung across his shoulders. The backpack looked normal enough from the outside, but inside it housed a customized, portable pump that could filter tiny metal particles from the surrounding air. Armed and ready, Epstein started down the stairs to begin an eight-hour scientific mission to gauge how polluted the air in New York City’s subway stations really is. Continue reading