Globe and Mail: This is part of The North, a Globe investigation of unprecedented change, to the climate, culture and politics of Canadas last frontier. Join the conversation with #GlobeNorth The Globes Artic Circle panel of experts and leaders is discussing five key questions about Northern issues. Their responses and conversations have appeared on Globe Debate. Doug Saunders: The crucial factor in the future of the North is the melting of the polar ice cap, already well underway. How will this change the lives,...