Jenna Jambeck, an environment engineering professor at the University of Georgia, holds a shopping bag filled with plastic trash from the ocean, right, and a plastic baggie with trash collected last fall from a clean up at Panama Beach, Fla., Thursday, Feb. 12, 2015, at the AAAS (American Association for the Advancement of Science) conference in San Jose, Calif. . (AP /Seth Borenstein)
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