Ed, At 13:21 29/08/2011, you wrote:
What the oil sands really mean?
Not as much as Robert J. Samuelson seems to imagine. Alberta's oil sands are not 97% of Canada's fossil fuel reserves. Probably only 50% or less. There's probably at least as much gas-equivalent in the edimentary shales way below the tar sands. As a single shale gas basin, it's the largest in the world, second only to that stretches underneath southern Brazil, Paraguay and northern Argentina. Now that economic drilling and fracking technology has been developed in the last few years, I doubt whether Alberta's tar sands will be exploited for much further, or not until the other side of 2100 or 2200 at least. (And by then it is to be hoped that a much smaller world population will also be adequately supplied with bacterially produced hydrogen gas!)
Keith
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Keith Hudson, Saltford, England http://allisstatus.wordpress.com/2011/08/
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