A possible new source of petroleum for the United States in the future? Alberta’s oil sands are destined to be the main supply of foreign oil to the United States for at least the next century. The sands hold proven reserves of 175 billion barrels, second only to Saudi Arabia’s 262 billion, and far more than the Arctic National Wildlife Refuge’s estimated 10 billion. Of course at the moment, extracting oil from these sands is an economic, as well as an environmental nightmare. Other interesting articles that have been written on this topic appeared in Wired Magazine (July 2004) and Kuro5hin (April 2003). Wikipedia also has a good entry on what tar sands are.
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