Re: fossil fuel
 

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Shale extraction costs are high since only small experimental plants have been built. Same problem with our tar sands back in the 70's. If oil stays around $40 the big players are sure to sink billions into extraction technology and extraction costs would certainly drop.

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It will, but not by much. The day we ramp this process up the environment and the air we breath will go to [censored]. That process has to be the most polluting process known to man. A necessary evil I regretfully admit, as humans have been too lazy to invest in things like ITER.