An abortion doctor has been arrested and charged with the murder of a patient and seven live infants whose spines were severed with scissors at a West Philadelphia clinic that has been described as a house of horrors, officials said today. District Attorney Seth Williams said the doctor, Kermit P. Gosnell, was charged following a grand jury investigation. Gosnell, 69, lost his medical license last year after health officials determined his clinic posed "a clear danger to the public." Gosnell was arrested this morning, officials said. He has maintained his innocence. The seven infants were born alive in the 6th,...