'Guardians' Knocks Out 'Turtles' at Box Office

Wall Street Journal'Guardians' Knocks Out 'Turtles' at Box OfficeWall Street Journal"Guardians of the Galaxy" became the summer's top-grossing movie at the North American box office that narrowly bested the young-adult melodrama "If I Stay," while the long-delayed "Sin City" sequel, "A Dame to Kill For" flopped. With an estimated $17 ...