GBH News Coverage from the GBH Newsroom. July 20, 2016 The MBTA's Green Line is bound for Somerville's Union Square and beyond ... right?Adam Reilly hosted a live Scrum on the state of the MBTA and the Green Line Extension at Brass Union in Somerville. Listen on: iTunes Stitcher Overcast GBH News Coverage from the GBH Newsroom.