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2016 was the year when — for the first time — climate change forced Americans to move elsewhere. It's first "climate refugees"? Residents of the tiny Louisiana island of Isle de Jean Charles, which has lost 98% of its land since 1955. As CNN's John Sutter reported last April, the marsh of Louisiana's fragile coast is disappearing at a mind-blowing rate: a football field of land, on average, falls into the Gulf of Mexico per hour. Yes that's right, a football field every hour. The Mississippi River has been strangled with so many dams and levees that it doesn't deliver the soil that's needed to rebuild the island's marshes. Oil and gas canals and pipelines, meanwhile, have carved up what's left of the marsh, making it more vulnerable to collapse. Global warming delivers the knockout punch, because as the marsh crumbles, the seas rise from melting ice sheets.