'Big Hero 6' vanquishes 'Interstellar' to lead US box office

Reuters'Big Hero 6' vanquishes 'Interstellar' to lead US box officeReutersLOS ANGELES/NEW YORK (Reuters) - "Big Hero 6," Walt Disney Co's animated superhero film featuring a flying robot, clocked $56.2 million in U.S. and Canadian ticket sales to lead the weekend box office, topping director Christopher Nolan's space ...