The retail apocalypse that has caused the closing of thousands of department stores in the US – not to mention the evaporation of tens of billions of dollars in market capitalization – is moving north: Sears Canada revealed Tuesday that it’s exploring a sale or a possible restructuring as it draws nearer to bankruptcy. In an admission that shouldn’t come as a surprise to anyone who has ever shopped online, Sears Canada said it has “significant doubt” that it can conti