A giant mechanical digger gouges out a chunk of topsoil, grass and tree stumps, extending a neat furrow that stretches into the distance. Dozens of similar furrows run parallel with the regularity of a ploughed field.
Yet no crop could grow in the pitch-black surface exposed by the machine working 1,000ft below our helicopter. This is the edge of a fast-expanding open-cast mine in the Canadian tar sands, one of the world’s most polluting sources of oil.
It takes only a few minutes to fly across the 200 sq miles (520 sq km) of mines, processing plants and man-made lakes of toxic water. But Canada has so far extracted only 2 per cent of a resource that it hopes will turn it into a global energy superpower.
BP and Shell are among dozens of oil companies preparing to raise production from 1.3 million barrels a day at present to 2.5 million by 2015 and 6 million by 2030.
Canada faces a dilemma as it prepares for next month’s UN climate summit in Copenhagen. It wants to present itself as environmentally responsible but also wants the profits from the tar sands, which cover an area of Alberta’s natural coniferous forest larger than England.
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A giant mechanical digger gouges out a chunk of topsoil, grass and tree stumps, extending a neat furrow that stretches into the distance. Dozens of similar furrows run parallel with the regularity of a ploughed field.
