Pipelines considered pointless: Big oil seems to be (finally) abandoning Canada's filthy tar sands

Canada's tar sands -- rebranded in this century as "oil sands" -- are the source of some of the world's filthiest and most expensive oil, which can only be extracted by burning tons of already-refined oil to boil tons of sand, producing a product that sells at a global discount because it is so adulterated. (more")