Yarnell Hill blaze has ravaged 8.4K acres
                                
                                
                                    (Newser) -
                                    The Arizona wildfire that  killed 19 elite firefighters  has been 45% contained, up from an official figure of 8% yesterday, as teams link fire lines, the  Arizona Republic  reports. "We’ve had a very productive day today," an official said yesterday. Authorities said they hadn't seen any...