Cancer risk tied to railway pollution Post published:August 16, 2007 Post category:Health Issues NPR reported on “Railways’ Toxic Emissions Tied to Higher Cancer Risk”. You Might Also Like STEP’s Wig Zamore presents to EPA on transportation-related pollution April 12, 2009 Study on traffic pollution and child asthma September 24, 2012 Land use and pollution issues on SCAT February 2, 2008