Tar Sands "Tar Sands" critically examines the frenzied development in the Canadian tar sands and the far-reaching implications for all of North America. Bitumen, the sticky stuff that ancients used to glue the Tower of Babel together, is the world's most expensive hydrocarbon. This difficult-to-find resource has made Canada the number-one supplier of oil to the United States, and every major oil company now Full description