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Shale: the game changer ? / Francesco Vallon, International energy, IAEE blog, 28th July 2012http://blog.iaee.org/?p=47810In the last 15 years, we have assisted to the development of a new technology to extract oil and gas and this has given many observers and industry operators a renewed expectation that a new era for hydrocarbons was likely to start. The oil and gas extracted in such a way has been called simply shale and the technology of extraction fracturing and cracking (fracking). Shale has therefore been seen as a game changer of the energy industry...