Overexposed to humans, celebrity animal is miserable
                                
                                
                                    (Newser) -
                                    Poor Knut: The celebrity polar bear, no longer the ball of fluff who captivated animal lovers around the world, is miserable without human contact and doesn't realize he isn't a person. "Knut must go. As soon as possible," a keeper at the Berlin Zoo said of the 300-pound...