Microplastics Are Literally Raining from the Sky—Even in Remote Mountains

16. Global Atmospheric Microplastic Cycle

Emerging studies indicate that microplastics now participate in a global atmospheric cycle, similar to the water or carbon cycles.
Once airborne, these particles are carried by weather systems across continents, deposited via precipitation, and can even be re-suspended into the atmosphere.
This ongoing cycle ensures microplastics remain a persistent, worldwide contaminant.
For more on this global phenomenon, see the summary in PNAS.