BRUNSWICK, Ga. (AP) - A Georgia teen convicted of fatally shooting a baby in a stroller was sentenced Thursday to spend the rest of his life in prison with no chance of parole after the grieving mother asked a judge to punish the gunman for taking "the love of my life." De'Marquise Elkins, 18, stood silent and showed no emotion as he was sentenced in a courtroom less than two weeks after a jury found him guilty of murder in the slaying of 13-month-old Antonio Santiago during a robbery attempt.