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English

Shale gas has become an increasingly important source of natural gas in the United States since the start of this century, and interest has spread to potential gas shales in the rest of the world.

Norwegian

Skifergass har blitt en stadig viktigere gasskilde i USA siden begynnelsen av 2000-årene, og interessen har spredt seg til potensielle skifergassforekomster i resten av verden.