Is Canada tarring itself?

START with the term “tar sands.” In Canada only fervent opponents of oil development in northern Alberta dare to use those words; the preferred phrase is the more reassuring “oil sands.” Never mind that the “oil” in the world’s third largest petroleum reserve is in fact bitumen, a substance with the consistency of peanut butter, so viscous that another fossil fuel must be used to dilute it enough to make it flow.