mbta February 14, 2020 9:34 am Here's What to Know About Weekend Orange Line Closures Trains will not run between Sullivan Square and Tufts Medical Center, starting at 8:45 p.m. Friday. Normal service resumes Monday morning. US & World Videos 6:03 Tensions rise during campus protests at MIT and Harvard 6:19 Police surround pro-Palestinian encampment at MIT 5:12 Karen Read's defense pushes the question of credibility 2:58 Karen Read trial: Defense accuses prosecution witness of perjury 2:24 Gov. Maura Healey reacts to Steward bankruptcy filing