A cargo ship grounded off the New Zealand coast splits in two after being lashed by pounding seas, spilling debris and sparking fears a fresh oil spill could wash ashore, officials say.

Labour Minister Lisa Raitt has asked the Canadian Industrial Relations Board to investigate Air Canada's disputes with two of its unions — pilots and ground staff — a move that will buy time to reach agreement and avert a strike and lockout threatened for midnight Sunday.

Popular culture has long shone a light on breakdancing, but various troupes are pushing the dance form to another level with shows that put the street moves onto stages across Canada.