Oct. 20, 2018 07:00AM EST
Lizzie Carr traveling down the Hudson River on her stand-up paddleboard. Max Guliani / The Hudson Project
By Patrick Rogers
Lizzie Carr was navigating a stretch of the Hudson River north of Yonkers, New York, recently when she spotted it—a hunk of plastic so large and out of place that she was momentarily at a loss to describe it.
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