Only a few years ago governments, corporations, and energy analysts were fixated on the problem of "the end of cheap oil" or "peak oil," pointing to growing shortages of conventional crude oil due to the depletion of known reserves. The International Energy Agency's 2010 report devoted a whole section to peak oil. Some climate scientists saw the peaking of conventional crude oil as a silver-lining opportunity to stabilize the climate—provided that countries did not turn to dirtier forms of energy such as coal and "unconventional fossil fuels."… Today all of this has changed radically with the advent of what some are calling a new energy revolution based on the production of unconventional fossil fuels. The emergence in North America—but increasingly elsewhere as well—of what is now termed the "Unconventionals Era" has meant that suddenly the world is awash in new and prospective fossil-fuel supplies.
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