By Adele Peters

If you think devastating effects of climate change aren’t here yet, the new film from the makers of “Chasing Ice” will make it very clear how wrong you are.

Underwater in the Great Barrier Reef, after weeks of filming coral to manually build time-lapses–helping gather 50 or 60 shots a day, and spending hours in the water–Zack Rago scrawled a note and held it up to a fellow cameraman. “This is the hardest dive I’ve ever had to do.” The coral, alive when filming started, was dying as they watched. As he held a rotting piece of coral in his hand, the coral disintegrated.

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