The Ontario government’s decision to shutter the 55-year-old Ontario Science Centre has critics crying foul. As Sean O’Shea reports they say an engineering report about the building’s declining condition doesn’t say anything about shutting it down. Forty-year-old Thi Trang Do and her 2-year-old son Marcus Vu both died after they were found suffering from gunshot wounds inside a residence on Casa Nova Drive in Vaughan, Ont. Van Viet Duong, 41, of Toronto, has been charged with two counts of first-degree murder and two counts of attempted murder in the quadrouple shooting.