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The tar sands in the province of Alberta cover a wide area centered on the town of Fort McMurray. They lie in the heart of Canada's Boreal forests, and produce close to one-and-a-half million barrels of oil a day.

The area is the epicentre of a struggle between environmentalists and multinational energy companies, with each side painting different pictures of how oil extraction impacts the region.

Al Jazeera's Steve Chao reports from Fort McMurray, Canada.

Source: Al Jazeera