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What Ocean Microplastics Are Really Made of

Humans produce hundreds of millions of tons of plastic every year. As much as 12.7 million metric tons of it ends up in the ocean, where it can transport pathogens, or be mistaken for food by hungry animals.  Some is visible to the naked eye—but not all plastic pollution is obvious.  The ocean is full of microplastics 5 millimeters or smaller, about the size of a pencil eraser. At those small sizes, it can be difficult to identify where the plastic came from. Was that tiny chunk part of a water bottle or a fishing lure?  Read more...

 

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