AlterNet calls this "The Biggest Global Warming Crime in History".
Greenpeace pledged a direct action campaign against BP following its decision to reverse a long-standing policy and invest heavily in extracting so-called "oil sands" that lie beneath the Canadian province of Alberta and form the world's second-largest proven oil reserves after Saudi Arabia.
Producing crude oil from the tar sands -- a heavy mixture of bitumen, water, sand and clay -- found beneath more than 54,000 square miles of prime forest in northern Alberta -- an area the size of England and Wales combined -- generates up to four times more carbon dioxide, the principal global warming gas, than conventional drilling.
[..]The oil rush is also scarring a wilderness landscape: millions of tonnes of plant life and top soil is scooped away in vast open-pit mines and millions of litres of water are diverted from rivers -- up to five barrels of water are needed to produce a single barrel of crude and the process requires huge amounts of natural gas.
[..]"It takes about 29kg of CO2 to produce a barrel of oil conventionally. That figure can be as much 125kg for tar sands oil. It also has the potential to kill off or damage the vast forest wilderness, greater than the size of England and Wales, which forms part of the world's biggest carbon sinks.
[..]BP said it will be using a technology that pumps steam heated by natural gas into vertical wells to liquefy the solidified oil sands and pump it to the surface in a way that is less damaging than open cast mining. But campaigners said this method requires 1,000 cubic feet of gas to produce one barrel of unrefined bitumen -- the same required to heat an average British home for 5.5 days.
[..]Licenses have been issued by the Albertan government to extract 350 million cubic metres of water from the Athabasca River every year. But the water used in the extraction process, say campaigners, is so contaminated that it cannot be returned to the eco-system and must instead be stored in vast "tailings ponds" that cover up to 20 square miles and there is evidence of increased rates of cancer and multiple sclerosis in down-river communities.
Experts say a pledge to restore all open cast tar sand mines to their previous pristine condition has proved sadly lacking. David Schindler, professor of ecology at the University of Alberta, said: "Right now the big pressure is to get that money out of the ground, not to reclaim the landscape. I wouldn't be surprised if you could see these pits from a satellite 1,000 years from now."
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