Marine plastic pollution is a global crisis, with 9 to 14 million metric tons of plastic entering the ocean every year. Tiny fragments called microplastics—ranging from 1 micron to 5 millimeters—make ...

Plastic particles smaller than five millimetres are known as microplastics. Originally the word "microplastic" first surfaced in 2004, it referred to plastic pieces that were around 20 µm in diameter.

For decades, we’ve known that plastic pollution is everywhere — in the air we breathe, the water we drink, and the soil beneath our feet. But scientists have now uncovered something far more personal: ...