mask mandate August 20, 2021 11:42 am Mayor Kim Janey Announces Indoor Mask Mandate for Boston The indoor mask mandate will go into effect on Aug. 27. US & World Videos 2:09 President of MIT calls for shutting down pro-Palestinian encampments 1:00 Three dead in apparent murder-suicide in Lowell 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 2:50 Community mourns Billerica police sergeant killed on duty