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Author and Grand Canyon whitewater guide Kevin Fedarko speaks about his novel and conservation. Loretta Yerian/WGCN

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Award winning author says Grand Canyon faces greatest conservation decisions

"The Emerald Mile" author says Grand Canyon faces threats from all sides, advocates for conservation

GRAND CANYON, Ariz. - Kevin Fedarko has worked as a part-time whitewater guide on the Colorado and is the author of "The Emerald Mile, the Epic Story of the Fastest Ride in History through the Heart of the Grand Canyon."