Guardian: Shares in Cairn Energy fell by more than 7% after the oil and gas group said that its controversial drilling programme off the coast of Greenland had come to an end without making a commercial discovery. It said it had managed to complete only two out of four planned wells by the 30 September, the end of the drilling season in Greenland. The company did not have time to finish drilling a third well where it announced last month oil had been “observed intermittently”. The …