Oh, melting of the permafrost in Canada is well underway, Brant. See this 2011 story from the CBC: Thawing permafrost sinks buildings, hikes costs in North. I also noted in my reply to Mike several ramifications for our North. A story from Scientific American last year describes some of the effects: In 2006, reduced thickness of ice roads forced the Diavik Diamond Mine in Northern Canada to fly in fuel rather than try to transport cargo across melted pathways, at an extra cost of $11.25 milli