Recent oil spills reinforce Keystone pipeline as a crude option
In the days of the Canadian frontier, indigenous peoples and fur traders used liquid bitumen to seal their canoes.
With the advance of technology, however, the substance has become a lucrative boon for the oil industry. For the rest of us, it has all the makings of an ecological horror story. Bitumen is a viscous, low-grade petroleum. It is the chief ingredient in the dirty oil mix now being exported from the Alberta tar sands to the United States.



