Leonardo DiCaprio is producing "11th Hour," a feature-length documentary that will examine the state of the global environment. The film will be co-directed and co-written by Leila Conners Petersen and Nadia Conners, co-founders of Tree Media Group, a production company with a mission to use media to support causes involving issues such as global transformation, sustainability and the environment. Investor and environmentalist Adam Lewis and renowned poker player Doyle Brunson, also a longtime environmentalist, are financing the film.

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