"Canada’s fabled Northwest Passage will not open up to shipping anytime soon, according to a study that warns global warming is a double-edged sword for northern transportation.

'And Canada is going to be feeling the harsh edge of the sword more strongly than other Arctic states,' says Scott Stephenson, lead author of the study that forecasts that the Northwest Passage will be the last Arctic shipping route to become ice free.

It also predicts huge swaths of Canada’s landscape will become inaccessible by road by mid-century."

Margaret Munro reports for Postmedia News May 29, 2011. [2]