Guardian: For a moment, let's take the shale gas evangelists at their word. Britain has stumbled on a pile of carbon cash in its cellar, the energy equivalent of finding a stack of ugly but valuable china in the attic. With North Sea oil and gas in decline and global markets volatile and pricey, suddenly there seems a sure way to deliver the government's promise of building 40 new gas power stations. By odd coincidence, newly estimated gas resources in the Bowland shale could meet our demand for gas for 40...