MBTA Green Line December 10, 2019 6:15 pm Service Resumes on Green Line After Smoke Incident at Park Street Service resumed on the MBTA’s Green Line Tuesday afternoon after smoke filled Park Street station. US & World Videos 2:40 Cambridge bans right turns on red lights 2:23 Friend of John O'Keefe testifies in Karen Read trial 1:57 Tensions escalate as protests across Mass. colleges continue 2:05 MIT students suspended amid pro-Palestinian protests 0:21 Man arrested in Centerville stabbing that sent victim to hospital