Bernard Looney steps down amid review of his relationships with colleagues
                                
                                
                                    (Newser) -
                                    Less than four years into his time as CEO of British oil and gas giant BP, Bernard Looney is out. Looney resigned, effective immediately, in what the  Guardian  calls a "surprise move" Tuesday night. The energy company told investors Looney, who had been with the firm since he was...