Massachusetts August 8, 2018 6:41 pm OSHA Investigating Industrial Explosion in Acton An investigation is underway after an explosion hurt six people at a business in Acton, Massachusetts. US & World Videos 2:17 MIT and Tufts call for student protesters to shut down encampments 1:49 Finalists in math competition hope their model helps ease housing crisis 2:44 Fire destroys apartment building in Randolph 2:09 Staffer at Kipp Academy in Lynn stabbed by student 3:14 After U.S. tourists' arrests in the Caribbean, a reminder about travel notices