January 26, 2017 5:55 am Sky View of Jackknifed Semi-Trailer A jackknifed semi-trailer shut down one lane on I-495 in Merrimac, Massachusetts Thursday morning. US & World Videos 0:23 Students clear tent encampment at Harvard University 3:10 Albert family takes the stand in Karen Read trial 2:23 Albert family member to take stand for 2nd day in Karen Read trial 1:34 Alleged illegal liposuction under investigation at Somerville home after woman dies 0:26 Two people hit, killed by Commuter Train in Natick