'Big Hero 6' is huge at the North American box office

UPI.com'Big Hero 6' is huge at the North American box officeUPI.com9 (UPI) -- The animated family flick Big Hero 6 beat the Matthew McConaughey-Jessica Chastain space adventure Interstellar for the top spot at the North American box office this weekend, Rentrak announced Sunday. Big Hero 6 earned $56.2 million in ...