Tar Sands Oil: Pros and Cons
Canada has oil reserves of 170 billion barrels, more than Iran and Nigeria combined. Much of that oil has been considered “not economically recoverable,” lying deep underground in a mixture of bitumen, a thick, tarry substance, sand and water known as oil sands or tar sands. Projections made after slowdowns in offshore production show that as much as 36 percent of American oil could be coming from Canadian oil sands by 2030. However, there are numerous major environmental problems and risks associated with this technology.
Source: http://www.TriplePundit.com: Tar Sands Oil: Pros and Cons