“Before the Flood,” captures a three-year personal journey alongside Academy Award-winning actor and U.N. Messenger of Peace Leonardo DiCaprio as he interviews individuals from every facet of society in both developing and developed nations who provide unique, impassioned and pragmatic views on what must be done today and in the future to prevent catastrophic disruption of life on our planet. Watch the full 90 minute movie here, made available for free by National Geographic, from October 30 through November 7, 2016.