First announced back in November of 2012, Showtime has finally pulled back the curtain a bit on its new 8-part climate change documentary series set to air next April. 

The project, spearheaded by director James Cameron and film producer Jerry Weintraub, involves the participation of a myriad of Hollywood celebrities; including Matt Damon, Don Cheadle, Jessica Alba, Ian Somerhalder, Michael C. Hall, Arnold Schwarzenegger, Harrison Ford, and many more. Unlike Gore's "An Inconvenient Truth," which focused on the science of global warming or DiCaprio's "11th Hour," which focused on the solutions, "Days" will focus on the personal stories of people impacts by climate change happening right now. 

"Everybody thinks that this is about melting glaciers and polar bears," says Cameron in the trailer. "I think it's a big mistake. This is 100-percent a people story."

While it remains to be seen whether a documentary series on climate change might connect better with people than a theatricial iteration, there's no denying that Cameron has assembled an engaged, talented and passionate crew to share these stories. A champion of environmental sustainability and conservation, the 58-year-old believes people must rise to the challenge to tackle this global issue. 

“We’re facing a threat that is as great as the threat that we as a nation faced in World War II," he said in 2010. "But that was a very, very defined evil and there was a starting gun with Pearl Harbor, and there was no argument but what did we do? Like the Apollo program, we mobilized on a national scale, and we need that greatest generation again. We need a greater generation.”

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