Only China, the US and India emitted more carbon than last year's worst-on-record wildfire season.

The move comes after similar announcements, including in the US and European Union.

Prime Minister Trudeau announced the change after unemployment rose in Canada and the programme faced UN scrutiny.

Isak and Alex Rockström face freezing waters and icebergs as they sail the perilous Northwest Passage.

Workers at one of Canada's two main railways resume work on Friday, partially ending a lockout after government intervention.

Prime Minister Justin Trudeau said the federal government would soon move to resolve the work stoppage.

The firm is deciding whether to remain in Japanese ownership or return to its Northern American roots.

The team is taking part in celebrations to mark the Royal Canadian Air Force’s centennial.