Globe and Mail: The fate of the $16.2-billion Mackenzie gas pipeline, which would open up Arctic gas reserves for development and provide a huge economic boost for Canada’s North, is hanging by a thread as a new set of regulatory delays could mean the project never gets built. “I’m really quite concerned,” Northwest Territories Premier Floyd Roland said in an interview. “It’s a delay on another delay, and we’ve not got a clear answer as to why. … It’s shaken the confidence of the business …