Doctor Who's 'Impossible Girl' Clara to leave the series
(AGI) Rome, Sept 18 - The BBC's longest-running televisionseries is about to lose one of its most popular performers.Jenna Coleman, who plays Clara Oswald in Doctor Who, will leavethe series soon. First broadcast in 1963, Doctor Who is a BBCscience fiction show whose lead character is a 'Time Lord' - analien time traveller, who calls himself simply "the Doctor". Heexplores the universe in the Tardis, a sentient machine thattravels in space and time through a 'vortex'. Outwardly theTardis looks like an old blue police box, commonly in Britainin the 1960s when