Doctors: Student freed by N. Korea has severe brain damage

An American college student who emerged from prison in North Korea in a coma has severe brain damage, but doctors do not know what caused it, a medical team treating him in Ohio said Thursday.The doctors described Otto Warmbier, 22, as being in a state of "unresponsive wakefulness," but declined to discuss his outlook for improvement, saying such information would be kept confidential."He has spontaneous eye opening and blinking," said Dr. Daniel Kanter, director of neurocritical care for the Un