Executive producers James Cameron, Jerry Weintraub, and Arnold Schwarzenegger have recruited an all-star cast for an important documentary event. Years of Living Dangerously will air on Showtime in April 2014; it features major celebrities talking to real people who have been negatively effected by global warming. Jessica Alba, Don Cheadle, Matt Damon, America Ferrara, Harrison Ford, Michael C. Hall, Olivia Munn and Ian Somerhalder are just a few of the celebrities who travel the world learning about this issue and sharing their thoughts.