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Narrated by Leonardo DiCaprio, written and directed by Leila Conners Petersen and Nadia Conners. The 11th Hour is produced by Chuck Castleberry, Brian Gerber, Conners Petersen and DiCaprio. The 11th Hour describes the last moment when change is possible. The film explores how humanity has arrived at this moment; how we live, how we impact the earth's ecosystems, and what we can do to change our course, through dialogues with experts from all over the world, including former Soviet Prime Minister Mikhail Gorbachev, renowned scientist Stephen Hawking, former head of the CIA R. James Woolsey and sustainable design experts William McDonough and Bruce Mau in addition to over 50 leading scientists, thinkers and leaders who present the facts and discuss the most important issues that face our planet.