PBS special covers the Big Dig – and Green Line extensions Post published:October 27, 2008 Post category:Green Line Quoted in the segment is Ellin Reisner, president of STEP. Read more and watch the video. You Might Also Like Sierra Club urges Romney to enforce Clean Air Act November 16, 2004 Your comments needed by Sept 13 to save the Green Line Extension! September 4, 2011 Critical Green Line meeting June 22! June 18, 2005