At the Clinton Global Initiative in 2008, former Vice President Al Gore called the possibility of fossil fuel corporations extracting oil shale “utter insanity.”
Insanity, though, doesn't serve as a hinderance for deeply entrenched and powerful fossil fuel interests.
Oil shale, also known as kerogen, should not be confused with shale gas or shale oil, two fossil fuels best known from Josh Fox's “Gasland.” As explained in a report by the Checks and Balances Project,
Oil shale itself is a misnomer. It is actually rock containing an organic substance called kerogen. The rocks haven’t been in the ground for enough time or under enough pressure to become oil. Oil companies need to recreate geological forces to produce any energy from it. Ideas for developing oil shale have included baking acres of land at 700 degrees for three to four years and even detonating an atomic bomb underground.
The really “insane” part of the equation: oil shale production, which has yet to begin, would be ecologically destructive to the extreme.
“Because oil shale is a rock, commercial production would release 25% to 75% more greenhouse gas emissions than conventional oil,” wrote the Western Resource Advocates. Furthermore, like tar sands production and shale oil/gas production, oil shale production is a water-intensive process.
Adding insult to injury, in the 100 years of attempted commercial production of oil shale, the fossil fuel industry has yet to seal the deal, motivating an April 2012 report by Checks and Balances titled “A Century of Failure.”