Are Microplastics in Our Water Becoming a Macroproblem? | National Geographic

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You might not be able to see them, but they’re in the water. Although trash heaps are easier to spot in waterways, microplastics—pieces of plastic smaller than five millimeters—have started to stir more concern. Acting as sponges, the pieces soak up the chemicals around them and often make their way through the food chain, ending up on dinner plates. Most microplastics are created over time from larger pieces or directly from microbeads in products like face washes or toothpaste. The pieces are so small they pass through waste treatment plants and into waterways.
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