
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, …
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 …
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.
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 …
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 …
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 …
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 …
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 …
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 …
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.”