IN : The new panda cub is a boy . Mei Xiang was artificially inseminated by sperm from two different pandas , zoo officials said . NEW : The name of the baby born last week is Tian Tian . Giant pandas are one of the world 's most endangered species .
IN : The new panda cub is a boy . NEW : The name of the baby born last week is Tian Tian . Giant pandas are one of the world 's most endangered species .