Microplastics are a modern environmental menace and a potential threat to human health. These tiny pieces of plastic, measuring from 1 to 5,000 micrometers, come mainly from larger plastics as well as sources such as paints and cosmetics. They are found in almost every corner of the planet, and...
Source: [Phys.org](https://phys.org/news/2026-09-rivers-microplastics-world-oceans-previously.html)