Sudbury 5 hours ago Crane tips over while trimming trees in Sudbury A crane operator walked away with minor injuries when the vehicle fell over Tuesday. US & World Videos 5:13 MBTA official talks about investigation into Green Line derailment in Cambridge 4:31 Several injuries reported after Green Line derailment in Cambridge 2:38 Mom alleges teacher beat her son, who has autism, at Dorchester school 0:26 Woman charged in crash that injured Mass. State Trooper 1:44 Inmate escapes from correctional center in Norfolk, Mass.