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Thousands of barrels of tar-sands oil have been burbling up into forest areas for at least six weeks in Cold Lake, Alberta, and it seems that nobody knows how to staunch the flow.

Drilling has been so intense near Fox Creek that its been linked to a series of earthquakes. One tremor measured 4.6 in magnitude, one of the two biggest human-induced seismic event in Canada's history.

FORT MCMURRAY, Alberta-A group of Canadian oil sands producers, including some of the world's biggest energy companies, is prepared to commit to specific environmental impact reduction targets later this month.