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  1. Microplastics - Wikipedia

    Microplastics are "synthetic solid particles or polymeric matrices, with regular or irregular shape and with size ranging from 1 μm to 5 mm, of either primary or secondary manufacturing origin, …

  2. Everything you should know about microplastics - UNEP

    Jun 2, 2025 · Are microplastics damaging to plants, animals and the wider environment? Yes. One study found they can slow the growth of a microscopic marine algae known as …

  3. Microplastics Everywhere: How Tiny Plastics Are Getting Into Our …

    5 days ago · Microplastics are turning up in oceans, soil, drinking water, and human tissue. Learn where they come from, why they matter, and what helps reduce exposure.

  4. Understanding microplastics: Exposure, health and prevention

    Jul 23, 2025 · Small plastic particles called microplastics are abundant in every ecosystem and have been found in plants, animals and cells. Data has even shown that microplastics can …

  5. Microplastics and our health: What the science says

    Jan 29, 2025 · Scientists have estimated that adults ingest the equivalent of one credit card per week in microplastics. Studies in animals and human cells suggest microplastics exposure …

  6. Microplastics: Sources, health risks, and how to protect yourself

    Feb 4, 2025 · Plastic is everywhere, and it is essential to modern life. Yet it comes with a hidden cost: microplastics, tiny pollutants that have become a growing concern for both the …

  7. Microplastics Research | US EPA

    Jul 2, 2025 · EPA researchers define microplastics, or MPs, as plastic particles ranging in size from 5 millimeters (mm), which is about the size of a pencil eraser, to 1 nanometer (nm). For …

  8. Microplastics | Definition, Properties, & Plastic Pollution | Britannica

    Dec 8, 2025 · Microplastics, small pieces of plastic, less than 5 mm (0.2 inch) in length, that occur in the environment as a consequence of plastic pollution. Microplastics are present in a variety …

  9. Microplastics: What They Are and Why They Matter to You

    Aug 14, 2025 · When it breaks down into tiny pieces, plastic becomes microplastic. According to the National Institutes of Health, microplastics are smaller than a sesame seed and wind up in …

  10. What are microplastics? - NOAA's National Ocean Service

    Dec 28, 2015 · Plastic debris can come in all shapes and sizes, but those that are less than five millimeters in length (or about the size of a pencil eraser) are called “microplastics.”