Extreme cold warnings in effect across Prairies, parts of Ontario and Quebec

Crews in downtown Vancouver are demolishing a more than century-old heritage building that the city’s chief building official says is so badly damaged it is at risk of collapse.The building at 500 Dunsmuir St., commonly known as Dunsmuir House, was built in 1909 initially as a hotel. It has also served as barracks for sailors in the Second World War, a Salvation Army home for veterans and later social housing, but has been empty since 2013.