VIDEO : Exclusive Interview: Pharrell Williams explains why he had to be involved with 'Hidden Figur

The upcoming movie 'Hidden Figures' tells the true tale of three African-American female scientists who helped NASA first put a man in space in the 1960s, but whose achievements were largely forgotten due to their gender and race. In this exclusive interview, Pharrell Williams, who produced the film as well as creating the music for it, explains why he and his business partner Mimi Valdes were excited by the project.