Russian plane crash today with 50 people Kill

   A passenger plane crashed at an airport in the Russian city of Kazan today, killing all 50 people on board, reports say.      The Boeing 737 had taken off from Moscow and was trying to land but exploded on impact at about 19:20 local time (15:20 GMT), officials said.
      The Emergencies Ministry said there were 44 passengers and six crew members on the Tatarstan Airlines flight. Investigators are now looking at whether a technical failure or crew error may have caused the crash. Among the dead was Irek Minnikhanov, a son of the president of the Russian Republic of Tatarstan, according to the official passenger list.