Microplastic
particles — not just in the form of tiny beads but fibers and
fragments, too — are polluting the Great Lakes and launching new areas
of study for scientists.
From
face scrubs to fleece jackets, the list of threats to the five lakes,
which hold about 20 percent of the Earth's surface freshwater, is
growing. The latest concerns are polymer particles under 5 millimeters
in size, and there are calls to start scrutinizing water samples for
nanoplastics under 0.33 mm.
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