hen scientists first discovered a higher-than-expected concentration of microplastic in New York’s Lake Tear of the Clouds, often described as the highest source of the Hudson River, they initially attributed the findings to airborne deposition. But follow-up research this year points to a different source for the contamination: hiking shoes and clothing. 
The concentration of microplastic particles, which are harmful particles ranging from 1 micrometer to 5 millimeters in size, poses significant threats to the environment by contaminating ecosystems and disrupting food chains.  ...

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