Once upon a time, whale oil from whaling was a major factor in the Canadian economy. Then whale oil was replaced by kerosene and then the electric lightbulb.

Once upon a time, whale oil from whaling was a major factor in the Canadian economy. Then whale oil was replaced by kerosene and then the electric lightbulb. Tar sands will go the same way, and Canada's booming wind turbine economy will replace it to some extent (wind power can be exported in several different forms).