Rising oil prices and falling production costs favour the extraction of oil from Alberta’s tar sands. But environmental objections are fierce
Jan 20, 2011
The Economist
http://www.economist.com/node/17959688?story_id=17959688&fsrc=rss
Jan 20, 2011
The Economist
http://www.economist.com/node/17959688?story_id=17959688&fsrc=rss
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