It's snowing plastic

Researchesr have developed a new technique that is orders of magnitude more sensitive than any of the other current methods used for tracing plastic in the environment. It allows scientists to detect ultra-trace quantities of many of the most common soluble and insoluble plastics in snow, water, rainfall, and even in soil samples once they have been separated - down to the level of a picogram.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/03/210317111727.htm