A resident of the Harriet E. Richards house on Baystate Road tweeted the ceiling had collapsed Tuesday, writing there were unsafe living conditions Boston University Facilities Management and Operations had previously flagged. BU Spokesperson Colin Riley said BU Facilities is aware of the problems in the house, but that repairs will take time. 

By Shannon Larson and Till Kaeslin A chemical spill occurred on the fifth floor of a laboratory located at the College of Arts and Sciences’ Metcalf Center for Science and Engineering on Thursday...