The controversial method of extracting gas by pumping high pressure water and chemicals into shale formations deep underground has been blamed for two minor earthquakes in the surrounding region. Environmental campaigners are calling for a halt to the drilling of what Cuadrilla believe could be significant reserves of natural gas. (Photo by Matthew Lloyd/Getty Images) D avid Cameron’s energy policy has hardly been a model of strategic clarity. But his government has at least been consistent in its enthusiasm for shale gas. Britain’s prime minister promised several years ago to “go all out” to extract the country’s trapped resources of shale. Even the Liberal Democrats, normally cautious about any initiative that might upset environmentalists, have supported the push for hydraulic fracturing, or fracking. Not […]