The Subways Are Filled With Foot Farts

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NEW YORK, NY - AUGUST 29:  Commuters wait for the subway August 29, 2011 in New York City. One day after Hurricane Irene hit New York the mass transit system, including subways and buses, began moving again in a limited capacity in time for Monday's rush hour.  (Photo by Joe Raedle/Getty Images)
Photo: Joe Raedle/2011 Getty Images

"Every time you step down, you pressurize the air that’s in your shoe. ... You stomp down, you squirt out a little warm air, carrying foot microbiology."— Dr. Norman R. Pace, a University of Colorado microbiologist, on the results of a survey of New York's subway air quality, which, while not dangerous, is pretty disgusting.